Version 4.0.0.

Version 3.2.0

Changed

- Upgraded `baseimage-docker` to [rel-1.0.13](https://github.com/phusion/passenger-docker/releases/tag/rel-1.0.13).
- If wkhtmltopdf is present, do not attempt to download it again.
- When executing the Bash shell with the default user (root) inside the container,
  the environment variables are now being properly set by sourcing
  `/etc/container_environment.sh` in `.bashrc`.
- The Bash prompt now displays the values of `$APP_NAME` and `$RAILS_ENV`.
- `host.docker.internal` now resolves to the container host.

Version 3.1.0

Changed

- Upgraded `baseimage-docker` to [rel-1.0.12](https://github.com/phusion/passenger-docker/releases/tag/rel-1.0.12).
- The Dockerfile now upgrades the operating system at build time.

Improved

- Increased waiting time for concurrent upgrade requests from 60 to 300 seconds.
- Show upgradeable packages in status message.
- Include application environment in status message.

Fixed

- Include `/bin` in `PATH`.
- Fix file-based locking of the upgrade progress.

Version 3.0.1

Fixed

- Fixed a fatal typo in the bootstrapping script.
- Exit gracefully during msmtp configuration to not make the bootstrapping fail.
- Do not use `uptime` in the status reports as it would reflect the host's
  uptime rather than the container uptime.

Version 3.0.0

Breaking change

- The app user and group were renamed from 'app' (passenger-docker's default)
  to 'dora' in order to further eliminate confusion. Now there is only one
  directory named 'app', and that is the said directory in a Rails application.
  **Important:** If you relay e-mails into your dora container as described in
  README.md, you will need to adjust the paths in your mail server configuration
  files, e.g. `master.cf` if you use Postfix.

New

- Implemented basic status reporting.

Fixed

- `rails-console.sh` now invokes `rails` as the `app` user.
- Removed the erroneous `server_name` directive from the Nginx site configuration
  file.

Version 2.1.0

- Added a simple locking mechanism to the `upgrade-app.sh` script. When Git web
  hooks are invoked after a push to the repository, the upgrade script may be
  called twice in quick succession, once for the commits push and once for the
  tags push.

- Use `passenger-ruby27` rather than `passenger-ruby26` as base image.
- Copy the right `rails-console.sh` helper script into the image.
- Fix setting the `PATH` variable to include the path to the `bin` directory.
- The `rails` command in the `rails-console.sh` helper script was missing the
  actual command.
- The nodejs installation script now respects the container's operating
  system's code name.

- Various rather cosmetic improvements to script output.

Version 2.0.1

- Revert setting `$HOME` to `/home/app/rails` as this caused the directory not
  to be empty any more after installing Bundler, which in turn caused `git clone`
  to fail.

Version 2.0.0

- The directory structure was changed because `/home/app/app` was too confusing
  in practice, especially considering that a Rails app has an `app` folder
  itself, which results in a path `/home/app/app/app`. That was a bit too
  much. The main user `app` is "inherited" from Phusion's
  [passenger-docker](https://github.com/phusion/passenger-docker) image and
  cannot be changed; but the directory that the repository is cloned into was
  renamed from `app` to `rails`.
  **Important:** If you relay e-mails into your dora container as described in
  README.md, you may need to adjust the paths in your mail server configuration
  files, e.g. `master.cf` if you use Postfix.

- `passenger-docker` has been updated from 1.0.9 to 1.0.11 which implies an
  upgrade of the default Ruby to 2.7.1 and and upgrade of Passenger to 6.0.6.

- Added `restart-app.sh` helper script.
- Added `rails-console.sh` helper script.

- Logrotate now uses the `copytruncate` option.

Version 1.6.1

- Explicitly mention SMTP-related environment variables in `docker-compose.yml`
  so they are properly picked up from the current environment.

Version 1.6.0

- Add [MailHog](https://github.com/mailhog/MailHog) to `docker-compose`.
- Added logrotate configuration for `/shared/log/*.log`.