Easypack:DockerCE(17.03.0-ce)安装

Docker刚刚发行了EE版本和CE版本, 在这篇Memo之中将会纪录使用Easypack安装第一版DockerCE的方法.

脚本位置

项目 详细
安装脚本 https://github.com/liumiaocn/easypack/tree/master/docker
OS CentOS7
Linux 内核 3.10

安装命令

sh easypack_docker.sh

之所以把yum install docker-ce的结果输出打开是因为目前的源下载还是有点慢,在此处可能会反复出错,网络好的话应该没有任何问题。

执行Log

[root@liumiaocn ~]# sh easypack_docker.sh
Sun Mar  5 15:50:29 EST 2017
## Install Preconfirm
## Uname
3.10.0-327.el7.x86_64
## OS bit
64

Sun Mar  5 15:50:29 EST 2017
## Install begins : yum-utils
## Install ends   : yum-utils

## Setting begins : yum-config-manager
## Setting ends   : yum-config-manager
## Setting begins : Update package cache
## Setting ends   : Update package cache
Sun Mar  5 15:50:37 EST 2017
## Install begins : docker-ce
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.btte.net
 * extras: mirrors.btte.net
 * updates: mirrors.btte.net
Resolving Dependencies
--> Running transaction check
---> Package docker-ce.x86_64 0:17.03.0.ce-1.el7.centos will be installed
--> Processing Dependency: docker-ce-selinux >= 17.03.0.ce-1.el7.centos for package: docker-ce-17.03.0.ce-1.el7.centos.x86_64
--> Processing Dependency: libcgroup for package: docker-ce-17.03.0.ce-1.el7.centos.x86_64
--> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-ce-17.03.0.ce-1.el7.centos.x86_64
--> Processing Dependency: libltdl.so.7()(64bit) for package: docker-ce-17.03.0.ce-1.el7.centos.x86_64
--> Running transaction check
---> Package docker-ce-selinux.noarch 0:17.03.0.ce-1.el7.centos will be installed
--> Processing Dependency: selinux-policy-base >= 3.13.1-102 for package: docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch
--> Processing Dependency: selinux-policy-targeted >= 3.13.1-102 for package: docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch
--> Processing Dependency: policycoreutils-python for package: docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch
---> Package libcgroup.x86_64 0:0.41-11.el7 will be installed
---> Package libseccomp.x86_64 0:2.3.1-2.el7 will be installed
---> Package libtool-ltdl.x86_64 0:2.4.2-21.el7_2 will be installed
--> Running transaction check
---> Package policycoreutils-python.x86_64 0:2.5-11.el7_3 will be installed
--> Processing Dependency: policycoreutils = 2.5-11.el7_3 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: setools-libs >= 3.3.8-1 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libsemanage-python >= 2.5-5 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: python-IPy for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libsepol.so.1(LIBSEPOL_1.0)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: checkpolicy for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
---> Package selinux-policy-targeted.noarch 0:3.13.1-60.el7 will be updated
---> Package selinux-policy-targeted.noarch 0:3.13.1-102.el7_3.15 will be an update
--> Processing Dependency: selinux-policy = 3.13.1-102.el7_3.15 for package: selinux-policy-targeted-3.13.1-102.el7_3.15.noarch
--> Processing Dependency: selinux-policy = 3.13.1-102.el7_3.15 for package: selinux-policy-targeted-3.13.1-102.el7_3.15.noarch
--> Running transaction check
---> Package audit-libs-python.x86_64 0:2.6.5-3.el7_3.1 will be installed
--> Processing Dependency: audit-libs(x86-64) = 2.6.5-3.el7_3.1 for package: audit-libs-python-2.6.5-3.el7_3.1.x86_64
---> Package checkpolicy.x86_64 0:2.5-4.el7 will be installed
---> Package libsemanage-python.x86_64 0:2.5-5.1.el7_3 will be installed
--> Processing Dependency: libsemanage = 2.5-5.1.el7_3 for package: libsemanage-python-2.5-5.1.el7_3.x86_64
--> Processing Dependency: libsemanage.so.1(LIBSEMANAGE_1.1)(64bit) for package: libsemanage-python-2.5-5.1.el7_3.x86_64
---> Package libsepol.x86_64 0:2.1.9-3.el7 will be updated
---> Package libsepol.x86_64 0:2.5-6.el7 will be an update
---> Package policycoreutils.x86_64 0:2.2.5-20.el7 will be updated
---> Package policycoreutils.x86_64 0:2.5-11.el7_3 will be an update
--> Processing Dependency: libselinux-utils >= 2.5-6 for package: policycoreutils-2.5-11.el7_3.x86_64
---> Package python-IPy.noarch 0:0.75-6.el7 will be installed
---> Package selinux-policy.noarch 0:3.13.1-60.el7 will be updated
---> Package selinux-policy.noarch 0:3.13.1-102.el7_3.15 will be an update
---> Package setools-libs.x86_64 0:3.3.8-1.1.el7 will be installed
--> Processing Dependency: libselinux >= 2.5-0 for package: setools-libs-3.3.8-1.1.el7.x86_64
--> Running transaction check
---> Package audit-libs.x86_64 0:2.4.1-5.el7 will be updated
--> Processing Dependency: audit-libs = 2.4.1-5.el7 for package: audit-2.4.1-5.el7.x86_64
---> Package audit-libs.x86_64 0:2.6.5-3.el7_3.1 will be an update
---> Package libselinux.x86_64 0:2.2.2-6.el7 will be updated
--> Processing Dependency: libselinux = 2.2.2-6.el7 for package: libselinux-python-2.2.2-6.el7.x86_64
---> Package libselinux.x86_64 0:2.5-6.el7 will be an update
---> Package libselinux-utils.x86_64 0:2.2.2-6.el7 will be updated
---> Package libselinux-utils.x86_64 0:2.5-6.el7 will be an update
---> Package libsemanage.x86_64 0:2.1.10-18.el7 will be updated
---> Package libsemanage.x86_64 0:2.5-5.1.el7_3 will be an update
--> Running transaction check
---> Package audit.x86_64 0:2.4.1-5.el7 will be updated
---> Package audit.x86_64 0:2.6.5-3.el7_3.1 will be an update
---> Package libselinux-python.x86_64 0:2.2.2-6.el7 will be updated
---> Package libselinux-python.x86_64 0:2.5-6.el7 will be an update
--> Processing Conflict: libselinux-2.5-6.el7.x86_64 conflicts systemd < 219-20
--> Restarting Dependency Resolution with new changes.
--> Running transaction check
---> Package systemd.x86_64 0:219-19.el7 will be updated
--> Processing Dependency: systemd = 219-19.el7 for package: systemd-sysv-219-19.el7.x86_64
---> Package systemd.x86_64 0:219-30.el7_3.7 will be an update
--> Processing Dependency: systemd-libs = 219-30.el7_3.7 for package: systemd-219-30.el7_3.7.x86_64
--> Running transaction check
---> Package systemd-libs.x86_64 0:219-19.el7 will be updated
--> Processing Dependency: systemd-libs = 219-19.el7 for package: libgudev1-219-19.el7.x86_64
---> Package systemd-libs.x86_64 0:219-30.el7_3.7 will be an update
---> Package systemd-sysv.x86_64 0:219-19.el7 will be updated
---> Package systemd-sysv.x86_64 0:219-30.el7_3.7 will be an update
--> Running transaction check
---> Package libgudev1.x86_64 0:219-19.el7 will be updated
---> Package libgudev1.x86_64 0:219-30.el7_3.7 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

===================================================================================================================================================
 Package                                  Arch                    Version                                  Repository                         Size
===================================================================================================================================================
Installing:
 docker-ce                                x86_64                  17.03.0.ce-1.el7.centos                  docker-ce-stable                   19 M
Updating:
 systemd                                  x86_64                  219-30.el7_3.7                           updates                           5.2 M
Installing for dependencies:
 audit-libs-python                        x86_64                  2.6.5-3.el7_3.1                          updates                            70 k
 checkpolicy                              x86_64                  2.5-4.el7                                base                              290 k
 docker-ce-selinux                        noarch                  17.03.0.ce-1.el7.centos                  docker-ce-stable                   28 k
 libcgroup                                x86_64                  0.41-11.el7                              base                               65 k
 libseccomp                               x86_64                  2.3.1-2.el7                              base                               56 k
 libsemanage-python                       x86_64                  2.5-5.1.el7_3                            updates                           104 k
 libtool-ltdl                             x86_64                  2.4.2-21.el7_2                           base                               49 k
 policycoreutils-python                   x86_64                  2.5-11.el7_3                             updates                           445 k
 python-IPy                               noarch                  0.75-6.el7                               base                               32 k
 setools-libs                             x86_64                  3.3.8-1.1.el7                            base                              612 k
Updating for dependencies:
 audit                                    x86_64                  2.6.5-3.el7_3.1                          updates                           233 k
 audit-libs                               x86_64                  2.6.5-3.el7_3.1                          updates                            85 k
 libgudev1                                x86_64                  219-30.el7_3.7                           updates                            76 k
 libselinux                               x86_64                  2.5-6.el7                                base                              161 k
 libselinux-python                        x86_64                  2.5-6.el7                                base                              234 k
 libselinux-utils                         x86_64                  2.5-6.el7                                base                              151 k
 libsemanage                              x86_64                  2.5-5.1.el7_3                            updates                           144 k
 libsepol                                 x86_64                  2.5-6.el7                                base                              288 k
 policycoreutils                          x86_64                  2.5-11.el7_3                             updates                           841 k
 selinux-policy                           noarch                  3.13.1-102.el7_3.15                      updates                           414 k
 selinux-policy-targeted                  noarch                  3.13.1-102.el7_3.15                      updates                           6.4 M
 systemd-libs                             x86_64                  219-30.el7_3.7                           updates                           369 k
 systemd-sysv                             x86_64                  219-30.el7_3.7                           updates                            63 k

Transaction Summary
===================================================================================================================================================
Install  1 Package (+10 Dependent packages)
Upgrade  1 Package (+13 Dependent packages)

Total size: 35 M
Total download size: 19 M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm is not installed
docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm                                                                                |  19 MB  00:00:52
Retrieving key from https://download.docker.com/linux/centos/gpg
Importing GPG key 0x621E9F35:
 Userid     : "Docker Release (CE rpm) "
 Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
 From       : https://download.docker.com/linux/centos/gpg
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : libsepol-2.5-6.el7.x86_64                                                                                                      1/39
  Updating   : libselinux-2.5-6.el7.x86_64                                                                                                    2/39
  Updating   : audit-libs-2.6.5-3.el7_3.1.x86_64                                                                                              3/39
  Updating   : libsemanage-2.5-5.1.el7_3.x86_64                                                                                               4/39
  Updating   : systemd-libs-219-30.el7_3.7.x86_64                                                                                             5/39
  Updating   : systemd-219-30.el7_3.7.x86_64                                                                                                  6/39
  Installing : libcgroup-0.41-11.el7.x86_64                                                                                                   7/39
  Updating   : libselinux-utils-2.5-6.el7.x86_64                                                                                              8/39
  Updating   : policycoreutils-2.5-11.el7_3.x86_64                                                                                            9/39
  Updating   : selinux-policy-3.13.1-102.el7_3.15.noarch                                                                                     10/39
  Updating   : selinux-policy-targeted-3.13.1-102.el7_3.15.noarch                                                                            11/39
  Updating   : systemd-sysv-219-30.el7_3.7.x86_64                                                                                            12/39
  Installing : libsemanage-python-2.5-5.1.el7_3.x86_64                                                                                       13/39
  Installing : audit-libs-python-2.6.5-3.el7_3.1.x86_64                                                                                      14/39
  Updating   : libselinux-python-2.5-6.el7.x86_64                                                                                            15/39
  Installing : setools-libs-3.3.8-1.1.el7.x86_64                                                                                             16/39
  Installing : checkpolicy-2.5-4.el7.x86_64                                                                                                  17/39
  Installing : libtool-ltdl-2.4.2-21.el7_2.x86_64                                                                                            18/39
  Installing : python-IPy-0.75-6.el7.noarch                                                                                                  19/39
  Installing : policycoreutils-python-2.5-11.el7_3.x86_64                                                                                    20/39
  Installing : docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch                                                                              21/39
libsemanage.semanage_direct_install_info: Overriding docker module at lower priority 100 with module at priority 400.
restorecon:  lstat(/var/lib/docker) failed:  No such file or directory
warning: %post(docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch) scriptlet failed, exit status 255
Non-fatal POSTIN scriptlet failure in rpm package docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch
  Installing : libseccomp-2.3.1-2.el7.x86_64                                                                                                 22/39
  Installing : docker-ce-17.03.0.ce-1.el7.centos.x86_64                                                                                      23/39
  Updating   : audit-2.6.5-3.el7_3.1.x86_64                                                                                                  24/39
  Updating   : libgudev1-219-30.el7_3.7.x86_64                                                                                               25/39
  Cleanup    : audit-2.4.1-5.el7.x86_64                                                                                                      26/39
  Cleanup    : selinux-policy-targeted-3.13.1-60.el7.noarch                                                                                  27/39
  Cleanup    : selinux-policy-3.13.1-60.el7.noarch                                                                                           28/39
  Cleanup    : systemd-sysv-219-19.el7.x86_64                                                                                                29/39
  Cleanup    : policycoreutils-2.2.5-20.el7.x86_64                                                                                           30/39
  Cleanup    : libsemanage-2.1.10-18.el7.x86_64                                                                                              31/39
  Cleanup    : systemd-219-19.el7.x86_64                                                                                                     32/39
  Cleanup    : libselinux-utils-2.2.2-6.el7.x86_64                                                                                           33/39
  Cleanup    : libgudev1-219-19.el7.x86_64                                                                                                   34/39
  Cleanup    : systemd-libs-219-19.el7.x86_64                                                                                                35/39
  Cleanup    : libselinux-python-2.2.2-6.el7.x86_64                                                                                          36/39
  Cleanup    : libselinux-2.2.2-6.el7.x86_64                                                                                                 37/39
  Cleanup    : libsepol-2.1.9-3.el7.x86_64                                                                                                   38/39
  Cleanup    : audit-libs-2.4.1-5.el7.x86_64                                                                                                 39/39
  Verifying  : libseccomp-2.3.1-2.el7.x86_64                                                                                                  1/39
  Verifying  : libsepol-2.5-6.el7.x86_64                                                                                                      2/39
  Verifying  : systemd-219-30.el7_3.7.x86_64                                                                                                  3/39
  Verifying  : libselinux-python-2.5-6.el7.x86_64                                                                                             4/39
  Verifying  : systemd-sysv-219-30.el7_3.7.x86_64                                                                                             5/39
  Verifying  : policycoreutils-python-2.5-11.el7_3.x86_64                                                                                     6/39
  Verifying  : libgudev1-219-30.el7_3.7.x86_64                                                                                                7/39
  Verifying  : libselinux-utils-2.5-6.el7.x86_64                                                                                              8/39
  Verifying  : audit-2.6.5-3.el7_3.1.x86_64                                                                                                   9/39
  Verifying  : selinux-policy-targeted-3.13.1-102.el7_3.15.noarch                                                                            10/39
  Verifying  : policycoreutils-2.5-11.el7_3.x86_64                                                                                           11/39
  Verifying  : python-IPy-0.75-6.el7.noarch                                                                                                  12/39
  Verifying  : docker-ce-17.03.0.ce-1.el7.centos.x86_64                                                                                      13/39
  Verifying  : libcgroup-0.41-11.el7.x86_64                                                                                                  14/39
  Verifying  : selinux-policy-3.13.1-102.el7_3.15.noarch                                                                                     15/39
  Verifying  : audit-libs-2.6.5-3.el7_3.1.x86_64                                                                                             16/39
  Verifying  : libtool-ltdl-2.4.2-21.el7_2.x86_64                                                                                            17/39
  Verifying  : libsemanage-2.5-5.1.el7_3.x86_64                                                                                              18/39
  Verifying  : systemd-libs-219-30.el7_3.7.x86_64                                                                                            19/39
  Verifying  : libselinux-2.5-6.el7.x86_64                                                                                                   20/39
  Verifying  : audit-libs-python-2.6.5-3.el7_3.1.x86_64                                                                                      21/39
  Verifying  : libsemanage-python-2.5-5.1.el7_3.x86_64                                                                                       22/39
  Verifying  : docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch                                                                              23/39
  Verifying  : setools-libs-3.3.8-1.1.el7.x86_64                                                                                             24/39
  Verifying  : checkpolicy-2.5-4.el7.x86_64                                                                                                  25/39
  Verifying  : selinux-policy-targeted-3.13.1-60.el7.noarch                                                                                  26/39
  Verifying  : systemd-sysv-219-19.el7.x86_64                                                                                                27/39
  Verifying  : libgudev1-219-19.el7.x86_64                                                                                                   28/39
  Verifying  : systemd-219-19.el7.x86_64                                                                                                     29/39
  Verifying  : selinux-policy-3.13.1-60.el7.noarch                                                                                           30/39
  Verifying  : systemd-libs-219-19.el7.x86_64                                                                                                31/39
  Verifying  : libselinux-utils-2.2.2-6.el7.x86_64                                                                                           32/39
  Verifying  : libsepol-2.1.9-3.el7.x86_64                                                                                                   33/39
  Verifying  : libsemanage-2.1.10-18.el7.x86_64                                                                                              34/39
  Verifying  : audit-libs-2.4.1-5.el7.x86_64                                                                                                 35/39
  Verifying  : libselinux-python-2.2.2-6.el7.x86_64                                                                                          36/39
  Verifying  : policycoreutils-2.2.5-20.el7.x86_64                                                                                           37/39
  Verifying  : audit-2.4.1-5.el7.x86_64                                                                                                      38/39
  Verifying  : libselinux-2.2.2-6.el7.x86_64                                                                                                 39/39

Installed:
  docker-ce.x86_64 0:17.03.0.ce-1.el7.centos

Dependency Installed:
  audit-libs-python.x86_64 0:2.6.5-3.el7_3.1   checkpolicy.x86_64 0:2.5-4.el7                 docker-ce-selinux.noarch 0:17.03.0.ce-1.el7.centos
  libcgroup.x86_64 0:0.41-11.el7               libseccomp.x86_64 0:2.3.1-2.el7                libsemanage-python.x86_64 0:2.5-5.1.el7_3
  libtool-ltdl.x86_64 0:2.4.2-21.el7_2         policycoreutils-python.x86_64 0:2.5-11.el7_3   python-IPy.noarch 0:0.75-6.el7
  setools-libs.x86_64 0:3.3.8-1.1.el7

Updated:
  systemd.x86_64 0:219-30.el7_3.7

Dependency Updated:
  audit.x86_64 0:2.6.5-3.el7_3.1                 audit-libs.x86_64 0:2.6.5-3.el7_3.1                     libgudev1.x86_64 0:219-30.el7_3.7
  libselinux.x86_64 0:2.5-6.el7                  libselinux-python.x86_64 0:2.5-6.el7                    libselinux-utils.x86_64 0:2.5-6.el7
  libsemanage.x86_64 0:2.5-5.1.el7_3             libsepol.x86_64 0:2.5-6.el7                             policycoreutils.x86_64 0:2.5-11.el7_3
  selinux-policy.noarch 0:3.13.1-102.el7_3.15    selinux-policy-targeted.noarch 0:3.13.1-102.el7_3.15    systemd-libs.x86_64 0:219-30.el7_3.7
  systemd-sysv.x86_64 0:219-30.el7_3.7

Complete!
## Install ends   : docker-ce
Sun Mar  5 15:52:37 EST 2017

## Setting begins : stop firewall
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
## Setting ends   : stop firewall
## Setting begins : clear iptable rules
## Setting ends   : clear iptable rules
## Setting begins : systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
## Setting ends   : systemctl enable docker
## Setting begins : systemctl start docker
## Setting ends   : systemctl start docker
## docker version
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 17.03.0-ce
Storage Driver: overlay
 Backing Filesystem: xfs
 Supports d_type: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 977c511eda0925a723debdc94d09459af49d082a
runc version: a01dafd48bc1c7cc12bdb01206f9fea7dd6feb70
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-327.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.939 GiB
Name: liumiaocn
ID: VTII:XPFB:2UTP:2722:MF66:X5QE:V3ZV:33DV:MUBI:IFV5:IOWE:BVYS
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
[root@liumiaocn ~]#

版本确认

可以看到版本已经是17.03.0-ce了。

[root@liumiaocn ~]# docker version
Client:
 Version:      17.03.0-ce
 API version:  1.26
 Go version:   go1.7.5
 Git commit:   3a232c8
 Built:        Tue Feb 28 08:10:07 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.03.0-ce
 API version:  1.26 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   3a232c8
 Built:        Tue Feb 28 08:10:07 2017
 OS/Arch:      linux/amd64
 Experimental: false
[root@liumiaocn ~]#

你可能感兴趣的:(Docker,深入浅出Docker)