own network

docker-compose.yml

@@ -1,9 +1,11 @@
 # docker compose up -d --build
 #
-# The host already runs Caddy as a reverse proxy. Caddy forwards requests
+# The host runs Caddy as a reverse proxy in its own compose project.
-# to host.docker.internal:3000 (or localhost:3000 from the host side).
+# Caddy forwards requests for email-cc.com to this container by name:
-# On Linux, if host.docker.internal does not resolve inside the container,
+#     reverse_proxy email-cc-web:3000
-# uncomment the extra_hosts line below so Caddy can reference it.
+# For that to resolve, Caddy and this container must share a Docker network.
+# The network "email-cc" is created by the Caddy compose project and joined
+# here as external.
 #
 # Prerequisites: a .env file in the project directory with:
 #   SES_SMTP_USER=
@@ -13,8 +15,14 @@
 services:
   web:
     build: .
-    ports:
+    container_name: email-cc-web
-      - "3000:3000"
     env_file:
       - .env
     restart: unless-stopped
+    networks:
+      - email-cc
+
+networks:
+  email-cc:
+    external: true
+    name: email-cc