Ensure containers are brought backup when exiting on error

This is esp. important for the NodeJS (backend) container as  Node will
exit on any unhandled error, it is best practice to let the errored
process crash and start a new one in its place. It this case we use
docker to do that for us (`restart: always` policy)

docker-compose.yaml

@@ -3,6 +3,7 @@ services:
     build:
       context: .
       dockerfile: searxng.dockerfile
+    restart: always
     expose:
       - 4000
     ports:
@@ -16,12 +17,17 @@ services:
       dockerfile: backend.dockerfile
       args:
         - SEARXNG_API_URL=null
+    restart: always
+    volumes:
+      - "/Volumes/keys/headllamp/keys/:/var/keys/"
+      - "${GOOGLE_APPLICATION_CREDENTIALS}:/var/keys/gcp_service_account.json"
     environment:
       SEARXNG_API_URL: 'http://searxng:8080'
       SUPER_SECRET_KEY: ${SUPER_SECRET_KEY}
       OPENAI: ${OPENAI}
       GROQ: ${GROQ}
       OLLAMA_API_URL: ${OLLAMA_API_URL}
+      GOOGLE_APPLICATION_CREDENTIALS: /var/keys/gcp_service_account.json
     depends_on:
       - searxng
     expose: