chore: init docker compose for caddy, postgres, watchtower

docker/caddy/compose.yaml

@@ -0,0 +1,16 @@
+services:
+  caddy:
+    image: caddy:latest
+    restart: unless-stopped
+    ports:
+      - 80:80
+      - 443:443
+      - 443:443/udp
+    volumes:
+      - ./volumes/Caddyfile:/etc/caddy/Caddyfile
+      - ./volumes/data:/data
+      - ./volumes/config:/config
+
+networks:
+  default:
+    name: caddy

docker/caddy/volumes/Caddyfile

@@ -0,0 +1,11 @@
+spa.example.com {
+	root * /srv/spa
+	encode zstd gzip
+	try_files {path} /index.html
+	file_server
+}
+
+app.example.com {
+	encode zstd gzip
+	reverse_proxy fullstack:3000
+}