Update Dockerfile

Author: ysdragon

Dockerfile

@@ -25,9 +25,8 @@ COPY . .
 # Expose the default port
 EXPOSE 8080
 
-# Ring runtime settings
-ENV RING_FILE=main.ring
-ENV RING_PACKAGES=simplejson
+# Install dependencies
+RUN ringpm install
 
 # Server Settings
 ENV SERVER_HOST=0.0.0.0
@@ -52,4 +51,4 @@ ENV METRICS_ENABLED=false
 
 # Health check
 HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
-  CMD curl -f http://localhost:${SERVER_PORT}/health || exit 1
+  CMD curl -f http://localhost:${SERVER_PORT}/health || exit 1