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[CI:DOCS] Document how entrypoint is configured in buildah config #5734

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[CI:DOCS] Document how entrypoint is configured in buildah config #5734

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22 changes: 22 additions & 0 deletions docs/buildah-config.1.md
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,28 @@ ignore the `cmd` value of the container image. However if you use the array
form, then the cmd will be appended onto the end of the entrypoint cmd and be
executed together.

Note: The string form is appended to the `sh -c` command as the entrypoint. The array form
replaces entrypoint entirely.

String Format:
```
$ buildah from scratch
$ buildah config --entrypoint "/usr/bin/notashell" working-container
$ buildah inspect --format '{{ .OCIv1.Config.Entrypoint }}' working-container
[/bin/sh -c /usr/bin/notshell]
$ buildah inspect --format '{{ .Docker.Config.Entrypoint }}' working-container
[/bin/sh -c /usr/bin/notshell]
```

Array Format:
```
$ buildah config --entrypoint '["/usr/bin/notashell"]' working-container
$ buildah inspect --format '{{ .OCIv1.Config.Entrypoint }}' working-container
[/usr/bin/notashell]
$ buildah inspect --format '{{ .Docker.Config.Entrypoint }}' working-container
[/usr/bin/notashell]
```

**--env**, **-e** *env[=value]*

Add a value (e.g. env=*value*) to the environment for containers based on any
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