Disabled back restart, added back healthcheck

Dockerfile

@@ -34,3 +34,6 @@ COPY \
     ./
 
 CMD ["pm2-runtime", "./back/process.yml"]
+
+HEALTHCHECK --interval=1m --timeout=10s \
+    CMD curl -f http://localhost:3000/api/Applications/status || exit 1

back/process.yml

@@ -1,6 +1,5 @@
 apps:
   - script: ./loopback/server/server.js
     name: salix-back
-    cron_restart: '0 4 * * *'
     instances: 1
-    max_restarts: 10
+    max_restarts: 5