Dockerize services

[kabili207]

This is built off of PR #22, with a variety of changes and additions. After waiting for feedback from ylambda regarding pulling my changes into their PR for several months, I decided to open a PR of my own in hopes our changes will be merged.

All services required to run a server, outside of the relay, are covered

• Switch to Alpine based images
  • They're usually smaller and rarely any harder to work with
• Split dependency fetching and building to separate images
  • While probably not very important for REON, it can help reduce the number of layers and result in smaller images
  • Also has the benefit of allowing more things to be parallelized if using docker buildx
• Allow specifying location of config.json in node programs via a new -c argument
• Partial support for setting config options via environment variables
  • Only works with the mail and mysql containers right now, but it's a start
  • An example.env was added with the mysql options
  • See mail/entrypoint.sh for a full set of options
• Adds image to handle processing of cron jobs
• Add DNS service with dnsmasq
  • The config is generated on the fly and acts as a non-recursive server by default
  • The host's IP address must be supplied via the EXTERNAL_IP environment variable (in .env), otherwise it will respond with NXDOMAIN

[milkcanworld]

Just in case: for me, add_user.php doesn't seem to work with a fresh deployment:

Warning: Trying to access array offset on null in /var/www/reon/web/classes/DBUtil.php on line 11

Warning: Trying to access array offset on null in /var/www/reon/web/classes/DBUtil.php on line 11

Warning: Trying to access array offset on null in /var/www/reon/web/classes/DBUtil.php on line 11

Warning: Trying to access array offset on null in /var/www/reon/web/classes/DBUtil.php on line 11

Fatal error: Uncaught mysqli_sql_exception: No such file or directory in /var/www/reon/web/classes/DBUtil.php:11
Stack trace:
#0 /var/www/reon/web/classes/DBUtil.php(11): mysqli->__construct(NULL, NULL, Object(SensitiveParameterValue), NULL)
#1 /var/www/reon/web/classes/DBUtil.php(16): DBUtil->__construct()
#2 /var/www/reon/web/scripts/add_user.php(6): DBUtil::getInstance()
#3 /var/www/reon/web/scripts/add_user.php(46): main()
#4 {main}
  thrown in /var/www/reon/web/classes/DBUtil.php on line 11

config.json:

{
        "hostname": "gameboy.datacenter.ne.jp";
        "email_domain": "gameboy.datacenter.ne.jp",
        "email_domain_dion": "cool.dion.ne.jp",
        "mysql_host": "db",
        "mysql_user": "reon",
        "mysql_password": "password",
        "mysql_database": "db",
        "amoj_regist": "h200"
}

(gameboy.datacenter.ne.jp is resolvable).

[kabili207]

Are you using the full docker compose exec -w /var/www/reon/web/scripts web php add_user.php command or are you running add_user.php on it's own outside of the container?

[milkcanworld]

I'm running the full docker command. The only thing I can think of is that a previous run had a mistake in the config.json, but I removed all containers and did a full docker system prune --all after that before doing anything else, so I wouldn't think that's affecting anything.

[milkcanworld]

shes_sad.mp4

Here's a short screen capture.

EDIT: Well, that's embarrassing. In her infinite wisdom, yesterday me ended line 2 of config.json with a semicolon instead of a comma. That'd do it. Sheesh. Sorry about that.

Now though, I get an error about db not being resolvable. I know this isn't handling DNS yet, so is it assumed that you have that in your external DNS setup already or is that supposed to be working as is?

[kabili207]

That screen cap helps a bit. I've updated the README to include a missing step that's likely the cause of your issues.

Now though, I get an error about db not being resolvable. I know this isn't handling DNS yet, so is it assumed that you have that in your external DNS setup already or is that supposed to be working as is?

The db name is internal to docker and should automatically be handled by compose. The DNS service is used to direct the adapter to the REON services. The dummy-servers project has python DNS server you can modify for that aspect.

I would highly recommend joining the REON Discord server if you haven't already. The project isn't in a public-ready state yet and there are a few things you'll want to do after getting the containers working properly in order to actually use it.

[kabili207]

I've added DNS to the services included int he docker setup. I opted to use dnsmasq as it's widely used, fairly lightweight compared to other popular DNS servers, and the config is simple enough to generate on-the-fly without looking like a mess. It has been set up to run as a non-recursive resolver, so nothing outside of the REON services should resolve