github.com/sld880311/docker@v0.0.0-20200524143708-d5593973a475/docs/reference/commandline/commit.md (about)

     1  ---
     2  title: "commit"
     3  description: "The commit command description and usage"
     4  keywords: "commit, file, changes"
     5  ---
     6  
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    15  
    16  # commit
    17  
    18  ```markdown
    19  Usage:  docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
    20  
    21  Create a new image from a container's changes
    22  
    23  Options:
    24    -a, --author string    Author (e.g., "John Hannibal Smith <hannibal@a-team.com>")
    25    -c, --change value     Apply Dockerfile instruction to the created image (default [])
    26        --help             Print usage
    27    -m, --message string   Commit message
    28    -p, --pause            Pause container during commit (default true)
    29  ```
    30  
    31  ## Description
    32  
    33  It can be useful to commit a container's file changes or settings into a new
    34  image. This allows you debug a container by running an interactive shell, or to
    35  export a working dataset to another server. Generally, it is better to use
    36  Dockerfiles to manage your images in a documented and maintainable way.
    37  [Read more about valid image names and tags](tag.md).
    38  
    39  The commit operation will not include any data contained in
    40  volumes mounted inside the container.
    41  
    42  By default, the container being committed and its processes will be paused
    43  while the image is committed. This reduces the likelihood of encountering data
    44  corruption during the process of creating the commit.  If this behavior is
    45  undesired, set the `--pause` option to false.
    46  
    47  The `--change` option will apply `Dockerfile` instructions to the image that is
    48  created.  Supported `Dockerfile` instructions:
    49  `CMD`|`ENTRYPOINT`|`ENV`|`EXPOSE`|`LABEL`|`ONBUILD`|`USER`|`VOLUME`|`WORKDIR`
    50  
    51  ## Examples
    52  
    53  ### Commit a container
    54  
    55  ```bash
    56  $ docker ps
    57  
    58  CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS              NAMES
    59  c3f279d17e0a        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            desperate_dubinsky
    60  197387f1b436        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            focused_hamilton
    61  
    62  $ docker commit c3f279d17e0a  svendowideit/testimage:version3
    63  
    64  f5283438590d
    65  
    66  $ docker images
    67  
    68  REPOSITORY                        TAG                 ID                  CREATED             SIZE
    69  svendowideit/testimage            version3            f5283438590d        16 seconds ago      335.7 MB
    70  ```
    71  
    72  ### Commit a container with new configurations
    73  
    74  ```bash
    75  $ docker ps
    76  
    77  CONTAINER ID       IMAGE               COMMAND             CREATED             STATUS              PORTS              NAMES
    78  c3f279d17e0a        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            desperate_dubinsky
    79  197387f1b436        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            focused_hamilton
    80  
    81  $ docker inspect -f "{{ .Config.Env }}" c3f279d17e0a
    82  
    83  [HOME=/ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin]
    84  
    85  $ docker commit --change "ENV DEBUG true" c3f279d17e0a  svendowideit/testimage:version3
    86  
    87  f5283438590d
    88  
    89  $ docker inspect -f "{{ .Config.Env }}" f5283438590d
    90  
    91  [HOME=/ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin DEBUG=true]
    92  ```
    93  
    94  ### Commit a container with new `CMD` and `EXPOSE` instructions
    95  
    96  ```bash
    97  $ docker ps
    98  
    99  CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS              NAMES
   100  c3f279d17e0a        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            desperate_dubinsky
   101  197387f1b436        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            focused_hamilton
   102  
   103  $ docker commit --change='CMD ["apachectl", "-DFOREGROUND"]' -c "EXPOSE 80" c3f279d17e0a  svendowideit/testimage:version4
   104  
   105  f5283438590d
   106  
   107  $ docker run -d svendowideit/testimage:version4
   108  
   109  89373736e2e7f00bc149bd783073ac43d0507da250e999f3f1036e0db60817c0
   110  
   111  $ docker ps
   112  
   113  CONTAINER ID        IMAGE               COMMAND                 CREATED             STATUS              PORTS              NAMES
   114  89373736e2e7        testimage:version4  "apachectl -DFOREGROU"  3 seconds ago       Up 2 seconds        80/tcp             distracted_fermat
   115  c3f279d17e0a        ubuntu:12.04        /bin/bash               7 days ago          Up 25 hours                            desperate_dubinsky
   116  197387f1b436        ubuntu:12.04        /bin/bash               7 days ago          Up 25 hours                            focused_hamilton
   117  ```