Add Dockerfile

Dockerfile

@@ -0,0 +1,14 @@
+ARG CADDY_VERSION=2.11.2
+FROM caddy:${CADDY_VERSION}-builder AS builder
+
+RUN xcaddy build \
+    --with github.com/lucaslorentz/caddy-docker-proxy/v2 \
+    --with github.com/pberkel/caddy-storage-redis \
+    --with github.com/caddy-dns/cloudflare
+
+FROM caddy:${CADDY_VERSION}-alpine
+
+COPY --from=builder /usr/bin/caddy /usr/bin/caddy
+RUN mkdir -p /etc/caddy
+
+CMD ["caddy", "docker-proxy"]