Update Dockerfile

Dockerfile

@@ -1,3 +1,4 @@
 FROM node:18-slim
 RUN npm install -g @modelcontextprotocol/server-github
-ENTRYPOINT ["npx", "-y", "@modelcontextprotocol/server-github"]
+# For the GitHub Space
+ENTRYPOINT ["npx", "-y", "@modelcontextprotocol/server-github", "--sse"]