fix: entrypoint

Author: fmenezes

Dockerfile

@@ -1,7 +1,7 @@
 FROM node:22-alpine
 ARG VERSION=latest
 RUN npm install -g mongodb-mcp-server@${VERSION}
-CMD ["mongodb-mcp-server"]
+ENTRYPOINT ["mongodb-mcp-server"]
 LABEL maintainer="MongoDB Inc <[email protected]>"
 LABEL description="MongoDB MCP Server"
 LABEL version=${VERSION}