Linux安装Docker

安装环境：Ubuntu18.04

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装备安装

使用APT安装

# 更新数据源
apt-get update
# 安装所需依赖
apt-get -y install apt-transport-https ca-certificates curl software-properties-common
# 安装 GPG 证书
curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
# 新增数据源
add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
# 更新并安装 Docker CE
apt-get update && apt-get install -y docker-ce

验证安装是否成功

输入：docker version

# 输出如下
Client: Docker Engine - Community
 Version:           19.03.4
 API version:       1.40
 Go version:        go1.12.10
 Git commit:        9013bf583a
 Built:             Fri Oct 18 15:54:09 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.4
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.10
  Git commit:       9013bf583a
  Built:            Fri Oct 18 15:52:40 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

配置Docker镜像加速器

这里我配置的是阿里云镜像加速器，进入阿里云官网控制台搜索容器镜像服务找到自己的专属镜像加速器
通过修改 daemon 配置文件 /etc/docker/daemon.json 来使用加速器

tee /etc/docker/daemon.json <<-'EOF'
{
     
  "registry-mirrors": ["https://xxxxxxxx.mirror.aliyuncs.com"]
}
EOF

重启 Docker

systemctl restart docker

验证配置是否成功

输入docker info
输出如下：

Client:
 Debug Mode: false

Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 1
 Server Version: 19.03.4
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339
 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
 init version: fec3683
 Security Options:
  apparmor
  seccomp
   Profile: default
 Kernel Version: 4.15.0-66-generic
 Operating System: Ubuntu 18.04.2 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 1.924GiB
 Name: ubuntu
 ID: LRHB:67DU:3TAT:CKDT:ZDE5:OVSC:HZ5M:SOHL:2H6R:75QY:6VWH:PIHE
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://4tecx2ze.mirror.aliyuncs.com/  这里就是你配置的镜像加速器
 Live Restore Enabled: false

WARNING: No swap limit support

在Docker安装tomcat

# 下载镜像
docker pull tomcat
# 运行容器
docker run -p 8080:8080 tomcat

浏览器输入虚拟机地址加8080端口即可访问 tomcat