rootfs/ci/root/.abuild/abuild.conf

+# Configuration for abuild
+
+# This file is mounted from the runner host.
+PACKAGER_PRIVKEY=/mnt/ext/gitlab-ci-svti@felk.cvut.cz-63ee4c0f.rsa
+
+# Allow distfiles to be cached on CI.
+SRCDEST="${XDG_CACHE_HOME:-$HOME/.cache}/distfiles"
+mkdir -p "$SRCDEST"
+
+# Make abuild work under root.
+SUDO_APK=apk
+ADDUSER=adduser
+ADDGROUP=addgroup

rootfs/ci/root/.profile

 export XDG_CACHE_HOME="${CI_PROJECT_DIR:-$HOME}/.cache"
-
-# Make abuild work under root.
-export SUDO_APK=apk
-export ADDUSER=adduser
-export ADDGROUP=addgroup
-export PACKAGER_PRIVKEY=/mnt/ext/gitlab-ci-svti@felk.cvut.cz-63ee4c0f.rsa