Deploy gulp project to azurewebsites

My project looks something like this:

├── bower.json

├── src

│ ├── bower_components

│ ├── images

│ ├── index.html

│ ├── scripts.min.js

│ └── styles.min.css

├── gulpfile.js

├── index.html

├── node_modules

│ ├── gulp-module-1

│ └── gulp-module-2

├── package.json

└── README

And I build it on localhost by 'gulp serve'. How can I host in on ftp server (azurewebsites)? What to upload?

Please look at the comment first! Below answer is just for the case that your gulp serve is used for compiling script only. If your gulp is starting a web server, you need not to try below.

Azure Web App (aka Azure Web Sites) is backed by Kudu.

You may set up a custom deployment script in Kudu by adding a .deployment and deployment.sh to the root of your project. Every time when you push new commit to repository, Kudu will run your deployment script. (Note: FTP upload will not trigger deployment)

Sample .deployment:

[config]  
command = bash ./deploy.sh

Sample deploy.sh (modified version from the blog post below)

# Deployment  
# ----------  

echo Handling node.js gulp deployment.  

# 1. Select node version  
selectNodeVersion  

# 2. Install npm packages  
if [ -e "$DEPLOYMENT_SOURCE/package.json" ]; then  
  eval $NPM_CMD install  
  exitWithMessageOnError "npm failed"  
fi  

# 3. Install bower packages  
if [ -e "$DEPLOYMENT_SOURCE/bower.json" ]; then  
  eval $NPM_CMD install bower  
  exitWithMessageOnError "installing bower failed"  
  ./node_modules/.bin/bower install  
  exitWithMessageOnError "bower failed"  
fi  

# 4. Run gulp for build
if [ -e "$DEPLOYMENT_SOURCE/gulpfile.js" ]; then  
  eval $NPM_CMD install gulp 
  exitWithMessageOnError "installing gulpfailed"  
  ./node_modules/.bin/gulp serve
  exitWithMessageOnError "gulp failed"  
fi  

# 5. KuduSync to Target  
"$KUDU_SYNC_CMD" -v 500 -f "$DEPLOYMENT_SOURCE/dist" -t "$DEPLOYMENT_TARGET" -n "$NEXT_MANIFEST_PATH" -p "$PREVIOUS_MANIFEST_PATH" -i ".git;.hg;.deployment;deploy.sh"  
exitWithMessageOnError "Kudu Sync to Target failed"