Docker 🔗
根据 Dockerfile 构建镜像：
docker build . -t <your_image_name>
heroku container:push <your_image_name>
heroku container:release <your_image_name>
heroku open
Got Error: Expected response to be successful, got 422 Name is invalid
HEROKU_DEBUG=1 heroku container:release <your_organization>/<your_image_name>:<your_image_tag>
heroku open
Real-time tail
heroku logs --tail
https://stackoverflow.com/questions/41804507/h14-error-in-heroku-no-web-processes-running
原因：没有启动 dyno Heroku 最小计算单元
如果使用 Procfile 可以用命令
heroku ps:scale web=1
对应 Procfile
web: gunicorn -w 4 -b 0.0.0.0:$PORT -k gevent main:app
没有用 Procfile 可以去应用 Resources 下
https://dashboard.heroku.com/apps/pure-fjord-97245/resources
修改 dyno 状态
heroku login -i 保持在终端下登录
heroku apps
docker-compose build
Your Ruby version is 2.5.6, but your Gemfile specified 2.5.3
Dockerfile
FROM ruby:2.5 -> FROM ruby:2.5.3
docker-compose run --rm web rails db:create
Deployment to Heroku
$ heroku update beta
$ heroku plugins:install @heroku-cli/plugin-manifest
$ heroku apps:create --manifest
$ heroku addons:create heroku-postgresql:hobby-dev
heroku addons:create heroku-postgresql:hobby-dev -a bebopx_hello-heroku.1
heroku addons:create heroku-postgresql:hobby-dev -a pure-fjord-97245
$ heroku config:set RAILS_MASTER_KEY=`cat config/master.key`
$ heroku config:set RACK_ENV=production RAILS_ENV=production
$ heroku config:set RAILS_SERVE_STATIC_FILES=enabled
$ heroku config:set WEB_CONCURRENCY=2
$ heroku config:set LANG=en_US.UTF-8