Corrective fixes for new dockerfile

[turbo124]

Fixes for nginx response buffers, and remove if checks around architecture that prevented mysql client from installing.

[benbrummer]

Response buffers are now handled twice

dockerfiles/debian/nginx/invoiceninja.conf

Line 4 in 113c700

fastcgi_buffer_size 16k;

and

dockerfiles/debian/nginx/laravel.conf

Line 26 in 113c700

fastcgi_buffer_size 16k;

Cuase of the alphabetical order laravel.conf will be the effective ones

[turbo124]

I don't think those were loading in the correct block. The error message persisted until I added the reference to the fastcgi block in the vhost itself

[benbrummer]

@turbo124 for me the fastcgi_buffer_size is still to small. Same behavior with setting it at either location. But it happens only with the desktop app.

The directives from invoiceninja.conf are loaded in http {...} context
Following the configuration inheritance global > http > server > location it will be set already for the location