60 lines
1.9 KiB
Markdown
60 lines
1.9 KiB
Markdown
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## Usage
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This image is optimized for size, as such, stuff in the following
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directories is removed:
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```
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/srv/binhost/
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/usr/include/
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/usr/lib64/debug/
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/usr/portage/
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/usr/share/applications/
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/usr/share/doc/
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/usr/share/gtk-doc/
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/usr/share/info/
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/usr/share/man/
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/usr/share/mime/
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/var/cache/paludis/metadata/
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/var/cache/paludis/names/
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/var/tmp/paludis/
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```
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When installing something, the hook in `ebuild_preinst_pre/cleanup_files.bash`
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will remove files from the following directories from the package before
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it is merged:
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```
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/usr/include/
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/usr/lib64/debug/
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/usr/share/applications/
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/usr/share/doc/
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/usr/share/gtk-doc/
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/usr/share/info/
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/usr/share/man/
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/usr/share/mime/
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```
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When creating a derived image, you have to do the following before
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you can attempt package installation, since the checked out files
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of the main gentoo repositories are removed, while the git repository
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data is still intact:
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```sh
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git -C /usr/portage checkout -- .
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cave sync gentoo
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```
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A complete Dockerfile command to install something could look like this:
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```
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RUN chgrp paludisbuild /dev/tty && \
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git -C /usr/portage checkout -- . && \
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env-update && \
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source /etc/profile && \
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cave sync && \
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cave resolve <the-package-I-want> -x && \
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rm -rf /var/cache/paludis/names/* /var/cache/paludis/metadata/* \
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/var/tmp/paludis/* /usr/portage/* /srv/binhost/*
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```
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A few things to note are also:
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* non-binary packages are not allowed, since /usr/include/ files are removed and compilation would probably fail hard (a complete rebuild via `cave resolve -e world -x` would be necessary after removing the `ebuild_preinst_pre/cleanup_files.bash` hook)
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* the same goes for Dockerfiles that do local compilations, they will have to run `cave resolve -e world -x` in order to restore all development files
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* a regular sync does not update the actual repositories, so we have a defined state (files in `/etc/paludis/repositories/*.conf` can be modified to allow that though)
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