学习docker的一些笔记（1）

docker history e5d7b72aad05 查看docker历史操作层（新增、删除.....）

IMAGE           CREATED           CREATED BY                                      SIZE     COMMENT
e5d7b72aad05    38 seconds ago    /bin/sh -c #(nop) ENTRYPOINT ["java" "-Djav…    0B
409f2fee0cde    42 seconds ago    /bin/sh -c #(nop) COPY file:4b04c6500d340c9e…   17.4MB
135fa7df95ac    6 minutes ago     /bin/sh -c #(nop) ARG JAR_FILE                  0B

docker image ls == docker images 列出镜像

REPOSITORY                              TAG               IMAGE ID        CREATED           SIZE
mydeveloperplanet/mykubernetesplanet    0.0.3-SNAPSHOT    e5d7b72aad05    13 seconds ago    1GB
<none>                                  <none>            8e2b049f9783    5 minutes ago     1GB
openjdk                                 10-jdk            b11e88dd885d    2 months ag

docker image inspect eced642d4f5c 查看镜像的信息

  ...
  "GraphDriver": {
    "Data": {
      "LowerDir": "/var/lib/docker/overlay2/655be8bea8e54c31ebb7e3adf05db227d194a49c1e2f95552d593d623e024b92/diff:/var/lib/docker/overlay2/993f77b91a487e19b3696836efee23c8a17791d71096d348c54c38fba3dc8478/diff:/var/lib/docker/overlay2/d62d6ca8ce1960d057e11d163d458563628e5a337de06455e714900f72005589/diff:/var/lib/docker/overlay2/cabdf4de81557a8047e3670bd2eecb5449de7de8fe9dfd4ad0c81d7dd2c61e9d/diff:/var/lib/docker/overlay2/062bf99d6a563ee2ef7824ec02ff5cd09fb8721cb23f6a55f8927edc2607f9c1/diff:/var/lib/docker/overlay2/ba024c24b20771dbf409f501423273e13225cf675f30896720cadace1c7be000/diff:/var/lib/docker/overlay2/d15f4477b53508127bebd1224c9ea09cd767f7db7429ffb1e8aa79b01ab77506/diff:/var/lib/docker/overlay2/ea434348d6625bc49875d0aba886b24ff0e1e204a350099981dcfc4029bc688d/diff:/var/lib/docker/overlay2/05e003c0522c7049110aa3ce09814ff2167da1e53ec83481fef03324011ce6e6/diff",
      "MergedDir": "/var/lib/docker/overlay2/205b55ee2f0e06394b6d17067338845410609887ccd18f53bf0646ff60452ffb/merged",
      "UpperDir": "/var/lib/docker/overlay2/205b55ee2f0e06394b6d17067338845410609887ccd18f53bf0646ff60452ffb/diff",
      "WorkDir": "/var/lib/docker/overlay2/205b55ee2f0e06394b6d17067338845410609887ccd18f53bf0646ff60452ffb/work"
    },
    "Name": "overlay2"
  },
  ...

虚玄镜像（没有仓库和tag标签的镜像）

# docker images -a  // -a参数为列出所有的镜像
REPOSITORY                              TAG               IMAGE ID        CREATED       SIZE
mydeveloperplanet/mykubernetesplanet    0.0.3-SNAPSHOT    eced642d4f5c    7 days ago    1GB
<none>                                  <none>            44a9097b8bad    7 days ago    1GB
<none>                                  <none>            e5d7b72aad05    7 days ago    1GB
<none>                                  <none>            04f6b2716819    7 days ago    987MB
<none>                                  <none>            b6f9ca000de6    7 days ago    987MB
openjdk                                 10-jdk            b11e88dd885d    2 months ago 

怎么过滤出虚玄镜像？

$ docker images -f dangling=true  // -f filter 过滤 ，dangling 虚玄
REPOSITORY    TAG     IMAGE ID        CREATED       SIZE
<none>        <none>  e5d7b72aad05    7 days ago    1GB
<none>        <none>  8e2b049f9783    7 days ago    1GB

删除虚玄镜像的方法

第一种：docker rmi 镜像ID

第二种：docker image prune