E621 docker images

These are docker images that allow you to deploy an instance of E621 with... relative ease.

Instructions

Prerequisites

• Have docker installed.

Configuration

1. Copy env.example to .env. Optionally, change NGINX_PORT if you want to run the service on a different port.
2. Copy core/danbooru_local_config.example.rb to core/danbooru_local_config.rb. This file can be used to override any setting in here. Make sure to check below for the values you can't change (docker overrides a couple in order to make E621 talk to the network's redis, memcached and elasticsearch containers).
3. Create your data folders. If you're using the default configuration, this will be in the data folder locally. Make sure that the elasticsearch scratch space (in default configuration, this is ./data/es) has been set to be read/write for everywhere.
4. Set vm.overcommit_memory=1 and vm.max_map_count=262144 in /etc/sysctl.conf to make redis and elasticsearch work. (If you have a /etc/sysctl.d folder, make a new file called docker.conf and add them in there). To temporarily raise it for the current session, run sysctl -w vm.max_map_count=262144 and sysctl -w vm.overcommit_memory=1 as root.
5. Run docker-compose pull to pull in the containers.
6. Run docker-compose up to bring up the images. On the first run, the database will be initialized, which takes a few minutes.
7. Reference the HACKS file to see if you need to apply any hacks.
8. After applying hacks, restart all containers with docker-compose restart.
9. Success

Updating

1. Run docker-compose pull to update the containers.
2. Reference the HACKS file to see if you need to undo or apply any hacks.
3. Run docker-compose run --rm core rake db:migrate to run the database migrations.
4. Run docker-compose up to bring up the images again.

Note

• The first user you create will automatically be given administrator privileges.

Changes from mainline E621 source code

• SSL disable patch: Disables the forced SSL that E621 normally has.
• Uploader accepts 0 tags: This changes the JS uploader to not demand tags to be placed on an image.
• Patch to artist forms to remove linked users from artists (it relies on missing table fields).
• Session patch: Disables SameSite cookies, which are causing issues in SessionLoader.
• User presenter patch: Fixes favorite sorting relying on a non-existing database column, causing errors in showing profiles if users tried to favorite something.

The following change is not a git diff file, but happens in the docker building process:

• sed in core/cable.yml: An inline patch to make E621 talk to the redis container server.

Things you can't change in local_config

The following values should not be overriden by the local_config file.

• elasticsearch_host
• ssl_options
• memcached_servers
• redis_url

Maintainers

• When updating the checked out e621 code, do a quick test build of the core. A mere docker-compose build core --pull should help identify any errors that might pop up.
• Nokogumbo fails to build when installed using bundler for some reason. Manually installing it using gem works, but it's a workaround. When sanitize (the gem that wants nokogumbo) is updated, check to make sure that the build still works and optionally remove the workaround.
• Users will be able to pull in the repo by just pulling, you'll want to build locally to test if stuff works.

Credits

• The lovely people from StackOverflow, ElasticSearch community forums and various Ruby on Rails support communities for providing the resources.
• The various developers of E621s source code.
• A dishonorable credit to the developers of Danbooru for using Ruby on Rails and having broken migrations rot in the codebase.
• An exceptionally dishonorable credit to the developers of Ruby on Rails for making an awful bloated mess of a library that is terrible to troubleshoot.

TODO

Pull Requests for these are welcome.

• Build script that takes care of creating data folder in the right way and sets up the env file.