fickit: nginx downloading problem with nginx under pressure

See: https://hub.docker.com/_/nginx#running-nginx-in-read-only-mode
See: https://stackoverflow.com/questions/25993826/err-content-length-mismatch-on-nginx-and-proxy-on-chrome-when-loading-large-file

fickit-frontend.yml

@@ -125,6 +125,8 @@ services:
      - CAP_SETUID
      - CAP_SETGID
      - CAP_DAC_OVERRIDE
+    tmpfs:
+      - /var/cache
     binds:
       - /etc/hosts:/etc/hosts:ro
       - /etc/resolv.conf:/etc/resolv.conf:ro