Docker - Revision history

T1t0: /* Docker data directory */

2026-09-03T13:27:08Z

Docker data directory

← Older revision		Revision as of 13:27, 3 September 2026
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	"data-root": "/home/shared/opt/data/docker"		"data-root": "/home/shared/opt/data/docker"
	}		}
			EOF
	</pre>		</pre>

T1t0 at 07:26, 3 September 2026

2026-09-03T07:26:26Z

← Older revision		Revision as of 07:26, 3 September 2026
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	</pre>		</pre>

	= User permissions =		= Configure =

			== User permissions ==

	* from https://docs.docker.com/install/linux/linux-postinstall/		* from https://docs.docker.com/install/linux/linux-postinstall/
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	usermod -aG docker <USERNAME>		usermod -aG docker <USERNAME>
	exit		exit
			</pre>

			== Docker data directory ==

			* from https://docs.docker.com/engine/daemon/#daemon-data-directory

			<pre>
			cat > /etc/docker/daemon.json << EOF
			{
			"data-root": "/home/shared/opt/data/docker"
			}
	</pre>		</pre>

T1t0 at 22:29, 2 May 2025

2025-05-02T22:29:48Z

← Older revision		Revision as of 22:29, 2 May 2025
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	docker run --rm -it --network host --name deb-stretch debian:stretch /bin/bash		docker run --rm -it --network host --name deb-stretch debian:stretch /bin/bash
	</pre>		</pre>

			= Use the official docker images =

			* see https://github.com/docker-library/docs

	= Create a minimal Debian Docker image =		= Create a minimal Debian Docker image =
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	</pre>		</pre>

	= ~~Use the official~~ docker images =		= Multiprocess docker images =

			Usually a container run just a process, as its PID 1, and stop when this process exits. You can spawn sub-processes using a shell as PID 1 process, but a shell does not handle sub-processes like a real init process do (e.g. propagating signal to its subprocesses).

			A ready form of use a better init process is the use of the --init docker run argument, that uses an embedded [https://github.com/krallin/tini/ tini] program as the PID 1 process.

			This can be sufficient to handle a simple secondary sub-process like a metrics collector, spawning it from a bash script. For more important sub-processes, something better than a bash script can be used, like [https://smarden.org/runit/ runit].

	* see https://~~github~~.com/docker-~~library~~/docs		For references, see [https://docs.docker.com/reference/cli/docker/container/run/ docker run doc], [https://docs.docker.com/engine/containers/multi-service_container/ multi-service container doc], [https://docs.docker.com/reference/compose-file/services/#init docker compose init doc]. For examples, see [https://medium.com/google-cloud/init-process-for-containers-d03a471fa0cc 1] or [https://medium.com/@rdsubhas/docker-image-with-tor-privoxy-and-a-process-manager-under-15-mb-c9e344111b61 2].

	= Docker Swarm =		= Docker Swarm =

T1t0: /* Analyze a docker image */

2024-02-09T08:27:02Z

Analyze a docker image

← Older revision		Revision as of 08:27, 9 February 2024
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	* Using command line:		* Using command line:

	~~example: print the CMD and ENTRYPOINT of an image:~~
	<pre>		<pre>
	docker image inspect <IMAGE:VERSION>		docker image inspect <IMAGE:VERSION>

T1t0: /* Analyze a docker image */

2024-02-09T08:26:44Z

Analyze a docker image

← Older revision		Revision as of 08:26, 9 February 2024
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	example: print the CMD and ENTRYPOINT of an image:		example: print the CMD and ENTRYPOINT of an image:
	<pre>		<pre>
	docker inspect -f '~~cmd~~: {{.Config.Cmd}} ~~- entrypoint~~: {{.Config.Entrypoint}}' <IMAGE:VERSION>		docker image inspect <IMAGE:VERSION>
			# or
			docker image inspect --format '{{json .}}' <IMAGE:VERSION> \| jq
			# or
			docker image inspect --format 'Cmd: {{println .Config.Cmd}}Entrypoint: {{println .Config.Entrypoint}}WorkingDir: {{println .Config.WorkingDir}}User: {{.Config.User}}' <IMAGE:VERSION>
	</pre>		</pre>

T1t0: /* Analyze a docker image */

2024-02-09T08:07:06Z

Analyze a docker image

← Older revision		Revision as of 08:07, 9 February 2024
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	== Analyze a docker image ==		== Analyze a docker image ==

	* ~~Use~~ [https://github.com/wagoodman/dive Dive application]		* Using command line:

			example: print the CMD and ENTRYPOINT of an image:
			<pre>
			docker inspect -f 'cmd: {{.Config.Cmd}} - entrypoint: {{.Config.Entrypoint}}' <IMAGE:VERSION>
			</pre>

			* Using [https://github.com/wagoodman/dive Dive application]

	install instruction here: [[Dive (Application)]]		install instruction here: [[Dive (Application)]]

T1t0 at 08:52, 20 December 2023

2023-12-20T08:52:15Z

← Older revision		Revision as of 08:52, 20 December 2023
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	See [[DockerSwarm]]		See [[DockerSwarm]]

	= Analyze a docker image =		= Notes =

			== Analyze a docker image ==

	* Use [https://github.com/wagoodman/dive Dive application]		* Use [https://github.com/wagoodman/dive Dive application]
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	</pre>		</pre>

	= Docker compose db example =		== Docker compose db example ==

	* docker-compose.yml		* docker-compose.yml
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	</pre>		</pre>

	= Graceful shutdown =		== Graceful shutdown ==

	* [https://joostvdg.github.io/docker/graceful-shutdown/ Gracefully Shutting Down Applications in Docker]		* [https://joostvdg.github.io/docker/graceful-shutdown/ Gracefully Shutting Down Applications in Docker]

T1t0 at 22:46, 17 November 2023

2023-11-17T22:46:40Z

@@ Line 156: / Line 156: @@
 cat /tmp/dive/latest.json | grep command > latest
 diffuse stable latest
 </pre>

T1t0: /* Docker Swarm */

2023-08-30T23:33:56Z

Docker Swarm

@@ Line 136: / Line 136: @@
 = Docker Swarm =
-== Use placeholder to get docker infos ==
+See [[DockerSwarm]]
 = Analyze a docker image =

T1t0 at 14:19, 21 June 2023

2023-06-21T14:19:26Z

← Older revision		Revision as of 14:19, 21 June 2023
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	&& rm -rf /var/lib/apt/lists/* /var/cache/apt/* /usr/share/man/*		&& rm -rf /var/lib/apt/lists/* /var/cache/apt/* /usr/share/man/*
	</pre>		</pre>

			= Use the official docker images =

			* see https://github.com/docker-library/docs

	= Docker Swarm =		= Docker Swarm =