Initial commit: Caddy proxy and network architecture

.gitignore

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+# Ignore environment variable files with secrets
+.env
+
+# If you ever mount data locally instead of using docker volumes
+*/data/
+*/db/

caddy/docker-compose.yml

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+services:
+  caddy:
+    image: caddy:latest
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "443:443"
+      - "443:443/udp"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile
+      - caddy_data:/data
+      - caddy_config:/config
+    networks:
+      - caddy_net
+
+volumes:
+  caddy_data:
+  caddy_config: