fix: add production configuration file and update docker-compose to remove unnecessary environment variables

Dockerfile

@@ -101,6 +101,9 @@ WORKDIR /app
 # Copy application files from builder stage
 COPY --from=builder --chown=pa11y:pa11y /app /app
 
+# Copy production configuration
+COPY --chown=pa11y:pa11y production.json /app/config/production.json
+
 # Switch to non-root user
 USER pa11y
 

docker-compose.yml

@@ -26,14 +26,7 @@ services:
       - ${PA11Y_PORT:-4000}:4000
     environment:
       NODE_ENV: ${NODE_ENV:-production}
-      PORT: 4000
-      NOINDEX: ${NOINDEX:-true}
-      READONLY: ${READONLY:-false}
-      SITE_MESSAGE: ${SITE_MESSAGE:-}
       WEBSERVICE_DATABASE: mongodb://mongodb:27017/pa11y-webservice
-      WEBSERVICE_HOST: 0.0.0.0
-      WEBSERVICE_PORT: 3000
-      WEBSERVICE_CRON: ${WEBSERVICE_CRON:-0 2 * * *}
     networks:
       - pa11y-network
 

production.json

@@ -0,0 +1,22 @@
+{
+  "port": 4000,
+  "noindex": true,
+  "readonly": false,
+
+  "webservice": {
+    "database": "mongodb://mongodb/pa11y-webservice",
+    "host": "0.0.0.0",
+    "port": 3000,
+    "cron": "0 2 * * *",
+    "chromeLaunchConfig": {
+       "args": [
+         "--no-sandbox",
+         "--disable-setuid-sandbox", 
+         "--disable-dev-shm-usage",
+         "--disable-accelerated-2d-canvas",
+         "--disable-gpu",
+         "--window-size=1280,1024"
+       ]
+    }
+  }
+}