Difference between revisions of "Dockerfile"
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↑ https://en.wikiversity.org/wiki/DevOps/Docker/Dockerfile
↑ https://kapeli.com/cheat_sheets/Dockerfile.docset/Contents/Resources/Documents/index
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| Line 9: | Line 9: | ||
* [[ENV]] | * [[ENV]] | ||
* [[EXPOSE]] | * [[EXPOSE]] | ||
| − | * [[FROM]] https://docs.docker.com/engine/reference/builder/#from | + | * <code>[[FROM]]</code> https://docs.docker.com/engine/reference/builder/#from |
* [[HEALTHCHECK]] https://docs.docker.com/engine/reference/builder/#healthcheck (>= [[Docker 1.12]]) | * [[HEALTHCHECK]] https://docs.docker.com/engine/reference/builder/#healthcheck (>= [[Docker 1.12]]) | ||
* LABEL | * LABEL | ||
* ONBUILD | * ONBUILD | ||
| − | * RUN: https://docs.docker.com/engine/reference/builder/#run | + | * <code>[[RUN]]:</code> https://docs.docker.com/engine/reference/builder/#run |
* SHELL | * SHELL | ||
* STOPSIGNAL | * STOPSIGNAL | ||
Revision as of 23:05, 17 June 2022
Dockerfile is a text file where you define instructions used to create your Docker images, check official Dockerfile Reference documentation: https://docs.docker.com/engine/reference/builder/[1]
For creating this file with instructions usually called Dockerfile you can use the following keywords[2]:
- ADD
- ARG
- CMD, for executing containers. https://docs.docker.com/engine/reference/builder/#cmd
- COPY
- ENTRYPOINT: https://docs.docker.com/engine/reference/builder/#entrypoint
- ENV
- EXPOSE
FROMhttps://docs.docker.com/engine/reference/builder/#from- HEALTHCHECK https://docs.docker.com/engine/reference/builder/#healthcheck (>= Docker 1.12)
- LABEL
- ONBUILD
RUN:https://docs.docker.com/engine/reference/builder/#run- SHELL
- STOPSIGNAL
- USER
- VOLUME, creates a mount point
- WORKDIR
Activities
- Learn differences between RUN and CMD or ENTRYPOINT: https://stackoverflow.com/a/25150809
- Read Understand how CMD and ENTRYPOINT interact https://docs.docker.com/engine/reference/builder/#understand-how-cmd-and-entrypoint-interact
- Learn about start configuration behavior and restart policy
- Learn about
.dockerignorefile - Read
Dockerfilebest practices https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
Related terms
docker build- Docker Engine release notes
- BuildKit Dockerfile-agnostic builder toolkit
docker startdocker run- Dockerfile examples
- Buildpack
See also
Dockerfile: FROM, RUN, CMD, ENTRYPOINT, WORKDIR, COPY, ADD, USER, ENV, ARG, HEALTHCHECK,hadolint, LABEL, EXPOSEdocker build [ --tag | --platform | --help ] FROM, Dockerfile, .dockerignore, requirements.txt, docker build --help, docker tagdocker-compose,docker-compose.yml: [services|volumes|networks|up|down|restart|logs|create|changelog|version|secrets|config|-v|-h|exec], docker-compose pull,Environment:, Docker-compose.yml examples,.env, release notes, expose:, docker-compose --env-file,services.deploy.resourcesMakefile
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