Put env vars use can update into separate file that is built from a template.

env.sh.template

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -eu
+
+export IGDB_CLIENT_ID=
+export IGDB_CLIENT_SECRET=
+export MOBYGAMES_API_KEY=
+export STEAMGRIDDB_API_KEY=
+export RETROACHIEVEMENTS_API_KEY=
+export SCREENSCRAPER_USER=
+export SCREENSCRAPER_PASSWORD=
+export HASHEOUS_API_ENABLED=true
+export OIDC_ENABLED=true