ci: build musl only for arm64 and reuse toolchain cache [CI]

.woodpecker/dev-image.yml

@@ -36,18 +36,6 @@ steps:
       - python3 ci/run-with-timeout.py 1800 bash ci/build-dev-image.sh backend
     depends_on: []
 
-  - name: build-musl-amd64
-    image: bash
-    environment:
-      GITEA_BASE: http://127.0.0.1:3100
-      GITEA_TOKEN:
-        from_secret: gitea_token
-      RELEASE_SIGNING_KEY:
-        from_secret: release_signing_key
-    commands:
-      - python3 ci/run-with-timeout.py 3600 bash ci/build-linux-agent.sh linux-musl-x64
-    depends_on: []
-
   - name: build-musl-arm64
     image: bash
     environment:
@@ -100,7 +88,7 @@ steps:
     commands:
       - python3 ci/run-with-timeout.py 900 bash ci/release-node-images.sh
     depends_on:
-      - build-musl-amd64
+      - build-glibc-amd64
       - build-musl-arm64
 
   - name: backend-e2e-tests