Bug 1611502 - Do not run initialize_data in Docker container if DATABASE_URL is being used (#5940)

docker/entrypoint.sh

@@ -14,7 +14,10 @@ while ! nc -z "${DATABASE_HOST}" "${DATABASE_PORT}" &> /dev/null; do
     sleep 1;
 done
 
-# Initialize migrations and SETA
-./initialize_data.sh
+# Only execute if we're using the mysql container
+if [ "${DATABASE_URL}" == "mysql://root@mysql/treeherder" ]; then
+    # Initialize migrations and SETA
+    ./initialize_data.sh
+fi
 
 exec "$@"