Yup, using that one, default port aswell.
Here's a more detailed log from the container itself
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.21. Set the 'ServerName' directive globally to suppress this message
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.21. Set the 'ServerName' directive globally to suppress this message
[Fri Sep 01 20:39:56.021627 2023] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.56 (Debian) configured -- resuming normal operations
[Fri Sep 01 20:39:56.021668 2023] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND'
[2023-09-01 20:40:07] local.INFO: Could not create or generate installation ID. Do not continue.
[2023-09-01 20:40:07] local.ERROR: Exception is: {"class":"FireflyIII\\Exceptions\\FireflyException","errorMessage":"Could not poll the database: SQLSTATE[42P01]: Undefined table: 7 ERROR: relation \"configuration\" does not exist\nLINE 1: select \"id\", \"name\", \"data\" from \"configuration\" where \"name...\n ^ (Connection: pgsql, SQL: select \"id\", \"name\", \"data\" from \"configuration\" where \"name\" = is_demo_site and \"configuration\".\"deleted_at\" is null limit 1)","time":"Fri, 01 Sep 2023 20:40:07 +0200","file":"\/var\/www\/html\/app\/Support\/FireflyConfig.php","line":80,"code":0,"version":"6.0.22","url":"http:\/\/192.168.8.38:8111","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/116.0.0.0 Safari\/537.36","json":true,"method":"GET"}
[2023-09-01 20:40:07] local.ERROR: Could not poll the database: SQLSTATE[42P01]: Undefined table: 7 ERROR: relation "configuration" does not exist
LINE 1: select "id", "name", "data" from "configuration" where "name...
The Database connection itself should work, as I had previous (user) errors with db name and pw, but both are now gone, which should mean a connection can be established