Optimises nodejs-express docker build
Optimises nodejs-express docker build

Run npm install if change in package.json
hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git,hasura/quickstart-docker-git