Fix mounting pkg dir. Run npm ci just before mage to compensate docker timing issues. Build backend for the current platform only.

Author: nablaone

docker-compose.yaml

@@ -4,11 +4,11 @@ services:
       context: ./builder
       dockerfile: Dockerfile
     volumes:
-      - .:/app
+      - ./:/app
       - go-cache:/root/.cache/go-build
-      - go-mod-cache:/go/pkg/mod
+      - go-mod-cache:/root/go/pkg/mod
     working_dir: /app
-    command: bash -c "cd /app && go mod download && mage -v && npm install && npm run build"
+    command: bash -c "cd /app && npm ci &&  GOFLAGS=-buildvcs=false mage -v build:Backend  && npm run build"
 
   grafana:
     user: root