Add gitea admin

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

packages/docker/gitea/entrypoint.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env sh
+
+set -o errexit
+set -o nounset
+
+gitea migrate -c /etc/gitea/app.ini
+
+if [ -f /etc/gitea/pre-start.sh ]; then
+  # shellcheck disable=SC1091
+  . /etc/gitea/pre-start.sh
+fi
+
+exec gitea web -c /etc/gitea/app.ini "$@"