docker: add caddy setup for testing

docker/Caddyfile

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+localhost:64444 {
+    tls internal
+
+    # Proxy /config path to proxy
+    reverse_proxy /api/* https://127.0.0.1:3000 {
+        transport http {
+                tls
+                tls_insecure_skip_verify
+        }
+      }
+
+    # Proxy root path to dev server
+    reverse_proxy http://localhost:5173
+
+}

docker/docker-compose.yaml

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+services:
+  caddy:
+    image: caddy:latest
+    ports:
+      - "64444:64444/tcp"
+      - "64444:64444/udp"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile
+    network_mode: host
+##  mumble-web2-proxy:
+##    image: rust:latest
+##    working_dir: /app
+##    volumes:
+##      - ..:/app
+##      - ./proxy-config.toml:/app/config.toml
+##    ports:
+##      - "4433:4433/tcp"
+##      - "4433:4433/udp"
+##    command: ["cargo", "run", "-p", "mumble-web2-proxy"]
+##    network_mode: host
+##
+##  mumble-server:
+##    image: mumblevoip/mumble-server:latest
+##    ports:
+##      - "64738:64738/tcp"
+##      - "64738:64738/udp"
+##    environment:
+##      - MUMBLE_CONFIG_WELCOMETEXT=Welcome to the Mumble server
+##    network_mode: host
+#volumes:
+#  caddy_data:
+#  caddy_config:
+#
+#networks:
+#  app-network:
+#    driver: bridge