Docker Config Reference (docker commit)

Example 1

docker commit myrunningcontainer newimage:latest

This command generates a new image tagged "newimage:latest" from the current state of the running container "myrunningcontainer". It captures all filesystem modifications since the container's inception, facilitating the preservation of runtime alterations for subsequent deployments.

Example 2

docker commit --pause=false debugcont snapshot:dev

This command commits the container "debugcont" to an image "snapshot:dev" without pausing the container during the process, allowing continuous operation while creating a live snapshot for debugging purposes in active environments.

Example 3

docker commit --author="Developer Name <dev@example.com>" appcontainer appimage:1.0

This command creates "appimage:1.0" from "appcontainer", attributing the changes to the specified author, which is useful for maintaining version history and accountability in collaborative development workflows.

Example 4

docker commit --message="Added configuration files" configcont updatedconfig:latest

This command commits "configcont" to "updatedconfig:latest" with a descriptive commit message, akin to version control practices, aiding in tracking specific modifications like file additions.

Example 5

docker commit --change='CMD ["nginx", "-g", "daemon off;"]' webcont nginxcustom:stable

This command alters the default command in the new image "nginxcustom:stable" from "webcont" by specifying a CHANGE directive, customizing runtime behavior for web server applications.

Example 6

docker commit --change='EXPOSE 8080' portcont exposedimage:1.2

This command commits "portcont" to "exposedimage:1.2", adding an EXPOSE instruction to document port 8080, enhancing image metadata for networked services.

Example 7

docker commit --change='ENV APP_ENV=production' envcont prodimage:latest

This command sets an environment variable in the committed image "prodimage:latest" from "envcont", configuring production-specific settings during image creation.

Example 8

docker commit --pause=true pausedcont frozenstate:debug

This command pauses "pausedcont" temporarily to commit a consistent state to "frozenstate:debug", ensuring data integrity for debugging intermittent issues.

Example 9

docker commit a1b2c3d4e5f6 quicksave:latest

This command commits a container identified by its partial ID "a1b2c3d4e5f6" to "quicksave:latest", providing flexibility when container names are not readily available.

Example 10

docker commit --author="Team Lead" --message="Security patches applied" securecont patched:secure

This command combines author and message options for "securecont" to create "patched:secure", documenting security updates for compliance and audit trails.

Example 11

docker commit --change='ENTRYPOINT ["/app/entry.sh"]' entrycont customentry:1.3

This command modifies the entrypoint in "customentry:1.3" from "entrycont", tailoring startup scripts for specialized application launches.

Example 12

docker commit --change='LABEL version="2.0"' labelcont versioned:2.0

This command adds a label to "versioned:2.0" from "labelcont", facilitating image filtering and management in registries.

Example 13

docker commit --change='USER appuser' usercont nonroot:latest

This command switches the default user in "nonroot:latest" from "usercont" to "appuser", enhancing security by avoiding root privileges in runtime.

Example 14

docker commit --change='VOLUME /data' volcont persistent:dev

This command declares a volume in "persistent:dev" from "volcont", promoting data persistence across container lifecycles.

Example 15

docker commit --change='WORKDIR /app' workcont appdir:stable

This command sets the working directory in "appdir:stable" from "workcont", standardizing file paths for application consistency.

Example 16

docker commit --pause=false --message="Live commit during load test" loadtestcont testimage:load

This command commits "loadtestcont" without pausing, with a message, for capturing states during performance testing.

Example 17

docker commit --author="QA Team" qaenvcont qaimage:tested

This command attributes the commit of "qaenvcont" to the QA team for "qaimage:tested", supporting quality assurance processes.

Example 18

docker commit --change='CMD ["python", "script.py"]' scriptcont pythonimage:exec

This command customizes the command for "pythonimage:exec" from "scriptcont", adapting for script-based executions.

Example 19

docker commit --change='EXPOSE 443' secureportcont httpsimage:secure

This command exposes port 443 in "httpsimage:secure" from "secureportcont", preparing for secure communications.

Example 20

docker commit --message="Installed additional dependencies" depcont extended:deps

This command documents dependency installations in "extended:deps" from "depcont", aiding maintenance.

Example 21

docker commit --change='ENV DEBUG=true' debugcont debugmode:enabled

This command enables debug mode via environment variable in "debugmode:enabled" from "debugcont".

Example 22

docker commit --pause=true dataconsistcont consistentdata:snapshot

This command ensures consistency by pausing "dataconsistcont" for "consistentdata:snapshot".

Example 23

docker commit f6e5d4c3b2a1 idbased:latest

This command uses a full container ID for committing to "idbased:latest", for precise referencing.

Example 24

docker commit --author="Admin" --change='LABEL maintainer="admin@example.com"' maintcont maintained:1.4

This command adds maintainer label and author for "maintained:1.4" from "maintcont".

Example 25

docker commit --change='ENTRYPOINT ["bash"]' shellcont bashimage:shell

This command sets bash as entrypoint in "bashimage:shell" from "shellcont", for interactive shells.

Example 26

docker commit --message="Configuration optimized" optcont optimized:config

This command notes optimizations in "optimized:config" from "optcont".

Example 27

docker commit --change='USER nobody' nobodycont minimalpriv:least

This command uses minimal privileges in "minimalpriv:least" from "nobodycont".

Example 28

docker commit --change='VOLUME /logs' logcont logged:persistent

This command declares a log volume in "logged:persistent" from "logcont".

Example 29

docker commit --pause=false --author="DevOps" opscont opsimage:managed

This command commits live with author for "opsimage:managed" from "opscont".

Example 30

docker commit --change='WORKDIR /data' --message="Data directory set" datacont dataimage:structured

This command combines workdir change and message for "dataimage:structured" from "datacont".