fix: add build-arg support for proxies and mirrors in Docker builds (#1346)

* fix: add build-arg support for proxies and mirrors in Docker builds (#1260)

Pin Debian images to bookworm, make UV source image configurable,
and pass APT_MIRROR/NPM_REGISTRY/UV_IMAGE through docker-compose.

* fix: ensure build args use consistent defaults across compose and Dockerfiles

UV_IMAGE: ${UV_IMAGE:-} resolved to empty when unset, overriding the
Dockerfile ARG default and breaking `FROM ${UV_IMAGE}`. Also configure
COREPACK_NPM_REGISTRY before pnpm download and propagate NPM_REGISTRY
into the prod stage.

* fix: dearmor NodeSource GPG key to resolve signing error

Pipe the downloaded key through gpg --dearmor so apt can verify
the repository signature (fixes NO_PUBKEY 2F59B5F99B1BE0B4).

---------

Co-authored-by: JeffJiang <for-eleven@hotmail.com>

docker/docker-compose.yaml

@@ -46,6 +46,7 @@ services:
       target: prod
       args:
         PNPM_STORE_PATH: ${PNPM_STORE_PATH:-/root/.local/share/pnpm/store}
+        NPM_REGISTRY: ${NPM_REGISTRY:-}
     container_name: deer-flow-frontend
     environment:
       - BETTER_AUTH_SECRET=${BETTER_AUTH_SECRET}
@@ -60,6 +61,9 @@ services:
     build:
       context: ../
       dockerfile: backend/Dockerfile
+      args:
+        APT_MIRROR: ${APT_MIRROR:-}
+        UV_IMAGE: ${UV_IMAGE:-ghcr.io/astral-sh/uv:0.7.20}
     container_name: deer-flow-gateway
     command: sh -c "cd backend && PYTHONPATH=. uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001 --workers 2"
     volumes:
@@ -105,6 +109,9 @@ services:
     build:
       context: ../
       dockerfile: backend/Dockerfile
+      args:
+        APT_MIRROR: ${APT_MIRROR:-}
+        UV_IMAGE: ${UV_IMAGE:-ghcr.io/astral-sh/uv:0.7.20}
     container_name: deer-flow-langgraph
     command: sh -c "cd /app/backend && uv run langgraph dev --no-browser --allow-blocking --no-reload --host 0.0.0.0 --port 2024"
     volumes:
@@ -154,6 +161,8 @@ services:
     build:
       context: ./provisioner
       dockerfile: Dockerfile
+      args:
+        APT_MIRROR: ${APT_MIRROR:-}
     container_name: deer-flow-provisioner
     volumes:
       - ~/.kube/config:/root/.kube/config:ro