Problem with installation with docker container

Staszek

I'm trying to setup Flarum on docker containers. I get config from https://phpdocker.io/generator and slightly modified it by changing nginx configuration (changed root path and added config, that I've found on Flarum installation manual). After I launch containers (address is localhost:8080), I can see installation form, but when I try to fill it and submit, I get error: Something went wrong: SQLSTATE[HY000] [2002] No such file or directory. I confirmed, that database is there, by connecting to it from mysql command line. Strange thing was that I could only connect to it with option --protocol=tcp.
Any Ideas?
Here is my docker config files archive, that I unpacked in Flarum directory, and launched with docker-compose up:
https://ufile.io/s34d5
In hostname for database during installation I wrote localhost:8083 and 127.0.0.1:8083

PranavJadhav

Did you check if database is working and connection is proper? And the vhosts files, are they properly done?

Staszek

Thanks for your reply!
As I wrote, I connected to this database from host's comand line. I used command:
mysql -u sal -p -h localhost -P 8083 --protocol=tcp sal-docker
Web page appears, so I suppose vhosts are ok, but you can check it, Nginx config is in attached archive. The problem is that Flarum cannot connect to the database, so probably there is something wrong with database configuration in docket-compose.yml, or somewhere else. But what? I had exactly the same problem with Mysql and MariaDB.

Staszek

Ok, I know what went wrong. I used localhost as database host for Flarum, that is run in php container. It is run in bridged network mode, so ot has it's private IP. From it's perspective localhost is itself... but it doesn't have mysql in it! I had to use mariadb sd host, and 3306 as port, because this is mysql containter's hostname.

If anyone is interested, I can give some broader instructions on how to setup Docker environment for php development.