Update Docker port mapping to match both to env var

.github/workflows/deploy-homelab.yml

@@ -39,6 +39,8 @@ jobs:
           export TRUST_PROXY=true
           export COOKIE_SECURE=true
           export JWT_SECRET=${{ secrets.JWT_SECRET }}
+          export PORT=${{ vars.PORT }}
+          export BASE_URL=${{ vars.BASE_URL }}
           docker compose -f docker-compose.yml down
           docker compose -f docker-compose.yml up -d --build
         EOF

docker-compose.yml

@@ -15,7 +15,7 @@ services:
   nanodrop:
     build: .
     ports:
-      - "${PORT:-3000}:3000"
+      - "${PORT:-3000}:${PORT:-3000}"
     environment: { <<: *env }
     volumes:
       - nanodrop-data:/app/data