Add push trigger to weekly Docker build workflow

Remove redundant COPY command from Dockerfile

.gitea/workflows/build-docker.yml

@@ -1,6 +1,7 @@
 name: Weekly Docker Build
 
 on:
+  push:                
   schedule:
     - cron: '0 0 * * 0'  # 00:00 sáng Chủ nhật hằng tuần (UTC)
   workflow_dispatch:     # Cho phép chạy tay nếu cần

Dockerfile

@@ -2,6 +2,4 @@ FROM alpine:latest
 
 RUN apk add --no-cache privoxy
 
-COPY config /etc/privoxy/config
-
 CMD ["privoxy", "--no-daemon", "/etc/privoxy/config"]