Initial commit

First container (for gitea)

README.md

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+# What this is
+
+Scripts and dockerfiles to build docker images based on Gentoo, but only with
+what is needed at runtime, i.e., without the build time dependencies.
+
+I use some non-standard profiles that strip what is not needed.
+
+# How to use it
+
+First copy the portage trunk in repo/gentoo/ and the ceamac trunk - miniroot
+branch in repo/ceamac/.
+
+Then run src/bootstrap.sh -h and see what it says.
+
+## Build locally (to test what goes in)
+
+For example:
+
+`src/bootstrap.sh -us -r repos/gentoo -r repos/ceamac output -a`
+
+- -u to build unstable.
+- -s to add support for steve.
+- -r repo-name-or-path to add whatever repos you need.  gentoo is added by
+default, even if not specified.
+- output - this can be any name, it is the name of the output directory where
+the --root will be.
+- optional extra arguments to emerge, added after output.  For example use -a
+to see what would be merged before merging.
+
+Other useful options:
+- -p profile to specify a profile (if not used, it will be asked)
+- -m make.conf to specify an alternate make.conf to be copied in $ROOT
+- -c yes to clear the output directory and rebuild all.  Without -c, the build
+will continue and reuse the last selected profile.
+- -e used together with -c to simply clean all and not build anything.
+
+After finishing, if all goes well, you should have a ready to use $ROOT in
+output as well as some useful scripts in bin, like bin/output-emerge to emerge
+more packages in output, bin/output-eselect to run eselect in $ROOT and
+bin/output-bwrap to start a bubblewrap shell inside $ROOT and test stuff.
+
+This bootstrap script will create only a base root (@system set, without
+        anything else).
+
+To continue run scripts from src or manually emerge stuff.
+
+For example `src/setup-gitea.sh output [-a]` to install gitea inside output.
+
+Important note: host portage should have the same trunk as $ROOT, because
+that's where BDEPENDs go.  In case of mismatches things can go wrong.
+
+## Build with docker
+
+Edit the dockerfiles and run docker build.  I did not add arguments.
+
+Unfortunately docker build does not support steve.
+
+For example:
+
+Build the base image with
+`docker buildx build -t gentoo-base-gnu -f Dockerfile.base.gnu .`
+
+The build the gitea image with
+`docker buildx build -t gentoo-gitea -f Dockerfile.gitea .`
+
+It uses the base image.  And the dockerfile copies the repos from repos/.