Docker Compose improvements

[ChrisVilches]

• [x] It takes a lot of time to boot up on my Digital Ocean, so it gets marked as unhealthy (even though it eventually boots correctly).
• [x] Minio port shouldn't be hardcoded (it should use the one from .env).
• [x] Healthcheck keeps running forever. I'd like to do it less often.

Logs due to the healthcheck loop:

::ffff:127.0.0.1 - - [05/May/2023:07:14:46 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"
::ffff:127.0.0.1 - - [05/May/2023:07:14:51 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"
::ffff:127.0.0.1 - - [05/May/2023:07:14:56 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"
::ffff:127.0.0.1 - - [05/May/2023:07:15:01 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"
::ffff:127.0.0.1 - - [05/May/2023:07:15:06 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"
::ffff:127.0.0.1 - - [05/May/2023:07:15:11 +0000] "GET / HTTP/1.1" 200 75 "-" "Wget"