📦 build(picx): optimize docker deployment

- switch from local build to pre-built ghcr.io images
- simplify docker-compose configuration by removing build context
- fix entrypoint.sh copy path in latest Dockerfile
- add multi-architecture support to data.yml

apps/picx/data.yml

@@ -17,3 +17,13 @@ additionalProperties:
   website: https://picx.xpoet.cn
   github: https://github.com/XPoet/picx
   document: https://picx-docs.xpoet.cn
+  architecture: 
+    - linux/amd64
+    - linux/arm64
+    - linux/ppc64le
+    - linux/riscv64
+    - linux/s390x
+    - linux/arm/v7
+    - linux/arm/v6
+    - linux/386
+