Refactor Dockerfile to streamline cloudflared installation and improve image layering

new-backend/Dockerfile.tunnel

@@ -18,20 +18,21 @@ COPY . .
 # Build the application with optimizations
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags="-s -w" -o monaco-backend .
 
+# Get cloudflared from official image
+FROM cloudflare/cloudflared:latest AS cloudflared
+
 # Use a smaller image for the final container
 FROM alpine:latest
 
-# Install Docker client and cloudflared
-RUN apk update && apk add --no-cache docker-cli curl && \
-    curl -L --output cloudflared.tgz https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-amd64.tgz && \
-    tar -xzf cloudflared.tgz && \
-    chmod +x cloudflared && \
-    mv cloudflared /usr/local/bin/ && \
-    rm cloudflared.tgz
+# Install Docker client
+RUN apk update && apk add --no-cache docker-cli
 
 # Create directories for cloudflared
 RUN mkdir -p /etc/cloudflared
 
+# Copy cloudflared from official image
+COPY --from=cloudflared /usr/local/bin/cloudflared /usr/local/bin/cloudflared
+
 # Copy the certificate file and config
 COPY cert.pem /etc/cloudflared/cert.pem
 COPY config.json /etc/cloudflared/config.json