.dockerignore: Difference between revisions
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=External= | |||
* https://docs.docker.com/engine/reference/builder/#dockerignore-file | |||
=Internal= | =Internal= | ||
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Contains files and directories from the [[Docker_build#The_Build_Context|build context]] that won't be uploaded to the docker host when the image is built. .dockerignore supports exclusion patterns similar to [[.gitignore]]. | Contains files and directories from the [[Docker_build#The_Build_Context|build context]] that won't be uploaded to the docker host when the image is built. .dockerignore supports exclusion patterns similar to [[.gitignore]]. | ||
⚠️ If a file or directory matches one of the <code>.dockerignore</code> patterns, it will not be possible to add it to the image with <code>COPY</code>. | |||
<syntaxhighlight lang='text'> | |||
=> ERROR [2/4] COPY ./common/docker/VERSION-base /automation 0.0s | |||
------ | |||
> [2/4] COPY ./common/docker/VERSION-base /automation: | |||
------ | |||
failed to compute cache key: "/common/docker/VERSION-base" not found: not found | |||
</syntaxhighlight> | |||
Also, the documentation says the semantics is similar to <code>[[.gitingore]]<code>'s, but if a directory name is specified, it is not examined recursively. For example, if <code>.dockerignore</code> contains: | |||
<syntaxhighlight lang='text'> | |||
venv/ | |||
</syntaxhighlight> | |||
then a directory <code>./src/main/python/venv</code> is not ignored, the full path relative to the docker context root must be specified: | |||
<syntaxhighlight lang='text'> | |||
src/main/python/venv/ | |||
</syntaxhighlight> | |||
Latest revision as of 05:23, 11 May 2022
External
Internal
Overview
Contains files and directories from the build context that won't be uploaded to the docker host when the image is built. .dockerignore supports exclusion patterns similar to .gitignore.
⚠️ If a file or directory matches one of the .dockerignore patterns, it will not be possible to add it to the image with COPY.
=> ERROR [2/4] COPY ./common/docker/VERSION-base /automation 0.0s
------
> [2/4] COPY ./common/docker/VERSION-base /automation:
------
failed to compute cache key: "/common/docker/VERSION-base" not found: not found
Also, the documentation says the semantics is similar to .gitingore's, but if a directory name is specified, it is not examined recursively. For example, if .dockerignore contains:
venv/
then a directory ./src/main/python/venv is not ignored, the full path relative to the docker context root must be specified:
src/main/python/venv/