创建镜像的方法有三种, 1, 基于已有的镜像的容器创建; 2, 基于本地模板导入; 3, 基于 dockerfile 文件创建.
1, 基于已有镜像的容器创建:
使用 docker commit 命令, 命令格式为 docker commit [options] container [repostory[:tag]]
示例:
- root@renkailang-K43SV:/home/renkailang# docker run -dit centos /bin/bash
- fc72541bad7eb5430c28d06f6da6724bbeaa864f1e08474e97dc8b417f32ff61
- root@renkailang-K43SV:/home/renkailang# docker commit fc7254 myrepo:v1
- sha256:fad1b5fcac3d9efbde62cc8366e515993c3ced83b6fd7a1bfa4af65d2e3433a4
查看新提交的镜像:
- root@renkailang-K43SV:/home/renkailang# docker images
- REPOSITORY TAG IMAGE ID CREATED SIZE
- myrepo v1 fad1b5fcac3d About a minute ago 200MB
- centos latest 49f7960eb7e4 6 weeks ago 200MB
2, 通过本地模板导入镜像
可以使用 openvz 提供的模板, 通过 URL 在线创建:
- root@renkailang-K43SV:/home/renkailang# docker import https://download.openvz.org/template/precreated/debian-7.0-x86-minimal.tar.gz debian:v2
- Downloading from https://download.openvz.org/template/precreated/debian-7.0-x86-minimal.tar.gz
- sha256:62e8d3459bb271c5e3496b264f34d4baaa322b66870270cade16645425a932cfB/88.44MB
或者 , 通过本地文件导入:
- root@renkailang-K43SV:/home/renkailang# ls
- debian-7.0-x86-minimal.tar.gz
- root@renkailang-K43SV:/home/renkailang# docker import debian-7.0-x86-minimal.tar.gz debian:v3
- sha256:33e16d28c5c9828ab9d7745ee082a4eb35fadb50487fd742252a3ed02be91181
3, 保存和加载镜像:
查看当前镜像:
- root@renkailang-K43SV:/home/renkailang# docker images
- REPOSITORY TAG IMAGE ID CREATED SIZE
- centos v2 1b6231b7505a 2 minutes ago 288MB
保存当前镜像到 tar 文件:
- root@renkailang-K43SV:/home/renkailang# docker save -o centosv3.tar centos:v2
- root@renkailang-K43SV:/home/renkailang# ls
- centosv3.tar debian-7.0-x86-minimal.tar.gz
载入 tar 文件到镜像:
root@renkailang-K43SV:/home/renkailang# docker load -i centosv3.tar
创建镜像
来源: http://www.bubuko.com/infodetail-2697799.html