Repoman in alpine docker container

Author: lucianposton

Dockerfile

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+FROM alpine:latest
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

action.yml

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+name: 'Repoman Ebuild QA'
+description: 'Run repoman to find ebuild QA issues'
+inputs:
+    repoman_args:
+        description: >
+            Additional arguments to pass after `repoman full`.
+            Defaults to `-dx`. Note: This parameter will undergo shell
+            wordsplitting and globbing.
+        default: '-dx'
+    path:
+        description: >
+            Path to cd to before starting repoman. The path is relative
+            to the checked out repository. If unspecified or empty,
+            repoman runs in the root of the repository.
+        default: ''
+    portage_version:
+        description: >
+            The portage version to download containing repoman e.g.
+            `2.3.80`. `latest` is the default value, which uses the latest
+            released version.
+        default: 'latest'
+    profile:
+        description: >
+            The gentoo profile to set before running repoman. The default
+            value is `latest`, which will result in using the first
+            profile in `profiles.desc` listed under `SYMLINK_LIB=no`
+            e.g. `default/linux/amd64/17.1`.
+        default: 'latest'
+    gentoo_repo:
+        description: >
+            Location to install the gentoo ebuild repository. This could
+            be useful if using an old portage version that expects a
+            different location. Default value is `/var/db/repos/gentoo`.
+        default: '/var/db/repos/gentoo'
+runs:
+    using: 'docker'
+    image: 'Dockerfile'
+branding:
+    color: 'purple'
+    icon: 'search'

entrypoint.sh

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+#!/bin/sh -l
+
+set -e
+
+repoman_args="$INPUT_REPOMAN_ARGS"
+path="$INPUT_PATH"
+profile="$INPUT_PROFILE"
+portage_version="$INPUT_PORTAGE_VERSION"
+gentoo_repo="$INPUT_GENTOO_REPO"
+
+apk add python3 py3-yaml py3-lxml git bash
+ln -s /usr/bin/python3 /usr/bin/python
+mkdir -p /etc/portage /var/cache/distfiles "$gentoo_repo"
+echo "portage:x:250:250:portage:/var/tmp/portage:/bin/false" >> /etc/passwd
+echo "portage::250:portage" >> /etc/group
+wget "https://www.gentoo.org/dtd/metadata.dtd" -O /var/cache/distfiles/metadata.dtd
+wget -O - "https://github.com/gentoo-mirror/gentoo/archive/master.tar.gz" | tar xz -C "$gentoo_repo" --strip-components=1
+
+if [ "$profile" = "latest" ]; then
+    profile="$(sed "1,/SYMLINK_LIB=no/d" < "$gentoo_repo/profiles/profiles.desc" | grep stable | head -1 | awk '{print $2}')"
+fi
+echo "Using profile \"$profile\""
+
+if [ ! -e "$gentoo_repo/profiles/$profile" ]; then
+    echo "Profile \"$profile\" not found in $gentoo_repo/profiles/"
+    exit 2
+fi
+ln -s "$gentoo_repo/profiles/$profile" /etc/portage/make.profile
+
+if [ "$portage_version" = "latest" ]; then
+    portage_version=$(grep DIST "$gentoo_repo/sys-apps/portage/Manifest" | tail -1 | cut -d ' ' -f 2)
+    portage_version=${portage_version%.tar.bz2}
+    portage_version=${portage_version#portage-} # e.g. "2.3.20"
+fi
+echo "Using portage version \"$portage_version\""
+
+if [ -z "$portage_version" ]; then
+    echo "Unable to determine portage version."
+    exit 3
+fi
+
+wget -O - "https://github.com/gentoo/portage/archive/portage-${portage_version}.tar.gz" | tar xz -C /
+ln -s "/portage-portage-${portage_version}/cnf/repos.conf" /etc/portage/repos.conf
+ln -s "/portage-portage-${portage_version}/repoman/bin/repoman" /usr/bin/repoman
+
+if [ ! -d ".git" ]; then
+    echo
+    echo "Found no git repository."
+    echo "Did you forget the actions/checkout step in your workflow job?"
+    echo
+    echo "    steps:"
+    echo "        - uses: actions/checkout@v2"
+    echo
+fi
+
+if [ -n "$path" ]; then
+    cd "$path"
+fi
+
+echo "Running 'repoman full $repoman_args' from $(pwd)"
+# shellcheck disable=SC2086
+repoman full $repoman_args