updated healthcheck with a dedicated function

.gitignore

@@ -5,4 +5,3 @@ _site/
 *.log
 .env
 docker-compose.yml
-sample-docker-compose.yml

sample-docker-compose.yml

@@ -0,0 +1,23 @@
+services:
+  web:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        SITE_DOMAIN: "${SITE_DOMAIN:?Error: SITE_DOMAIN is not set. Please define SITE_DOMAIN in .env}"
+        SITE_URL: "${SITE_URL:-https://${SITE_DOMAIN}}"
+        PORT: "${PORT:-8080}"
+    image: river-rooks-blog:latest
+    container_name: river_rooks_web
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "node", "healthcheck.js"]
+      interval: 30s
+      timeout: 3s
+    environment:
+      - "SITE_DOMAIN=${SITE_DOMAIN:?Error: SITE_DOMAIN is not set. Please define SITE_DOMAIN in .env}"
+      - "SITE_URL=${SITE_URL:-https://${SITE_DOMAIN}}"
+      - "PORT=${PORT:-8080}"
+    ports:
+      - "${HOST_PORT:-${PORT:-8080}}:${PORT:-8080}"
+

test/healthcheck.js

@@ -0,0 +1,5 @@
+const port = process.env.PORT || 8080;
+
+fetch(`http://127.0.0.1:${port}/healthz`)
+	.then((res)) => process.exit(res.ok ? 0:1))
+	.catch(() process.exit(1));