Gulpfile and gitlab CI config to go with my Hexo based blog.

.gitlab-ci.yml

image: node:4.2.2

pages:
  cache:
    paths:
    - node_modules/

  script:
  - npm install -g gulp
  - npm install
  - gulp hexo
  - gulp
  artifacts:
    paths:
    - public
  only:
  - master

gulpfile.js

var gulp = require('gulp');

var ftp = require('vinyl-ftp');
var cssnano = require('gulp-cssnano');
var htmlmin = require('gulp-htmlmin');
var minifyInline = require('gulp-minify-inline');
var del = require('del');
var gutil = require('gulp-util');
var Hexo = require('hexo')
var hexo = new Hexo(process.cwd(), {});

gulp.task('deploy', function() {

    var conn = ftp.create({
        host: '',
        user: '',
        password: '',
        parallel: 10,
        log: gutil.log
    });

    // using base = '.' will transfer everything correctly
    // turn off buffering in gulp.src for best performance

    return gulp.src('./public/**/*', {
            base: './public',
            buffer: false
        })
        .pipe(conn.newer('/html/baum/')) // only upload newer files
        .pipe(conn.dest('/html/baum/'));

});

gulp.task('html', function() {

    gulp.src('./public/**/*.html')
        .pipe(minifyInline())
        .pipe(htmlmin({
            collapseWhitespace: true
        }))
        .pipe(gulp.dest('./public'));
});

gulp.task('css', function() {
    gulp.src('./public/**/*.css')
        .pipe(cssnano())
        .pipe(gulp.dest('./public'));
})

gulp.task('hexo', function() {
    hexo.init().then(function() {
        hexo.call('generate', {}).then(function() {
            hexo.exit();
        });
    });
});

gulp.task('all', function() {
    hexo.init().then(function() {
        hexo.call('generate', {}).then(function() {
            gulp.start('publish');
        });
    });
});

//Cleanup
gulp.task('clean', function() {
    del(['public/'])
});

gulp.task('publish', ['default'], function() {
    gulp.start('deploy');
})

gulp.task('default', function() {
    gulp.start('html', 'css');
});