user/gitlab-shell: new aport

user/gitlab-shell/gitlab-shell.post-install

@@ -0,0 +1,23 @@
+#!/bin/sh
+set -eu
+
+keys_file='/var/lib/gitlab/.ssh/authorized_keys'
+
+if [ ! -f "$keys_file" ]; then
+	keys_dir="$(dirname "$keys_file")"
+	echo "* Initializing authorized_keys file in $keys_dir" 1>&2
+
+	mkdir -m0700 -p "$keys_dir"
+	chown git:git "$keys_dir"
+
+	touch "$keys_file"
+	chmod 0600 "$keys_file"
+	chown git:git "$keys_file"
+fi
+
+cat <<EOF >&2
+*
+* GitLab Shell has been initialized. Read /etc/gitlab/gitlab-shell.yml and
+* modify settings as need.
+*
+EOF