Fix APP_PORT: make container listen port and healthcheck follow APP_PORT

Co-authored-by: xCyanGrizzly <53275238+xCyanGrizzly@users.noreply.github.com>

.env.example

@@ -13,6 +13,8 @@ AUTH_GITHUB_ID=""
 AUTH_GITHUB_SECRET=""
 
 # App
+# APP_PORT controls the port the container listens on AND how it is exposed on the host.
+# If you change APP_PORT, also update NEXT_PUBLIC_APP_URL to match.
 NEXT_PUBLIC_APP_URL="http://localhost:3000"
 APP_PORT=3000
 

Dockerfile

@@ -54,6 +54,7 @@ RUN chmod +x docker-entrypoint.sh
 
 USER nextjs
 
+# Default port — overridden at runtime by the PORT env var (set via docker-compose APP_PORT)
 EXPOSE 3000
 ENV PORT=3000
 ENV HOSTNAME="0.0.0.0"

docker-compose.yml

@@ -5,7 +5,7 @@ services:
       dockerfile: Dockerfile
     pull_policy: never
     ports:
-      - "${APP_PORT:-3000}:3000"
+      - "${APP_PORT:-3000}:${APP_PORT:-3000}"
     environment:
       - DATABASE_URL=postgresql://${POSTGRES_USER:-dragons}:${POSTGRES_PASSWORD:-stash}@db:5432/${POSTGRES_DB:-dragonsstash}
       - AUTH_SECRET=${AUTH_SECRET:?Set AUTH_SECRET in .env}
@@ -18,11 +18,12 @@ services:
       - BOT_USERNAME=${BOT_USERNAME:-}
       - LOG_LEVEL=${LOG_LEVEL:-info}
       - WORKER_INTERVAL_MINUTES=${WORKER_INTERVAL_MINUTES:-60}
+      - PORT=${APP_PORT:-3000}
     depends_on:
       db:
         condition: service_healthy
     healthcheck:
-      test: ["CMD", "wget", "-q", "--spider", "http://localhost:3000/api/health"]
+      test: ["CMD-SHELL", "wget -q --spider http://localhost:$$PORT/api/health || exit 1"]
       interval: 30s
       timeout: 5s
       retries: 3