Optimise migrations on startup

The migrations are only started if there are some that have not been
applied. Additionally the maintenace task needed after an update are
now run after the migrations

docker/docker-entrypoint.sh

@@ -15,7 +15,7 @@ source /opt/netbox/venv/bin/activate
 DB_WAIT_TIMEOUT=${DB_WAIT_TIMEOUT-3}
 MAX_DB_WAIT_TIME=${MAX_DB_WAIT_TIME-30}
 CUR_DB_WAIT_TIME=0
-while ! ./manage.py migrate 2>&1 && [ "${CUR_DB_WAIT_TIME}" -lt "${MAX_DB_WAIT_TIME}" ]; do
+while ! ./manage.py showmigrations >/dev/null 2>&1 && [ "${CUR_DB_WAIT_TIME}" -lt "${MAX_DB_WAIT_TIME}" ]; do
   echo "⏳ Waiting on DB... (${CUR_DB_WAIT_TIME}s / ${MAX_DB_WAIT_TIME}s)"
   sleep "${DB_WAIT_TIMEOUT}"
   CUR_DB_WAIT_TIME=$((CUR_DB_WAIT_TIME + DB_WAIT_TIMEOUT))
@@ -24,6 +24,19 @@ if [ "${CUR_DB_WAIT_TIME}" -ge "${MAX_DB_WAIT_TIME}" ]; then
   echo "❌ Waited ${MAX_DB_WAIT_TIME}s or more for the DB to become ready."
   exit 1
 fi
+# Check if update is needed
+if ! ./manage.py migrate --check >/dev/null 2>&1; then
+  echo "⚙️ Applying database migrations"
+  ./manage.py migrate --no-input
+  echo "⚙️ Running trace_paths"
+  ./manage.py trace_paths --no-input
+  echo "⚙️ Removing stale content types"
+  ./manage.py remove_stale_contenttypes --no-input
+  echo "⚙️ Removing expired user sessions"
+  ./manage.py clearsessions
+  echo "⚙️ Clearing cache data"
+  ./manage.py invalidate all
+fi
 
 # Create Superuser if required
 if [ "$SKIP_SUPERUSER" == "true" ]; then