Missing double underscore in Dockerfile

[tristndev]

In the ckan-base/2.9/Dockerfile the variable CKAN_SITE_URL is introduced but never used. I reckon it is a typo and CKAN__SITE_URL is meant (note the double underscore). Fixed that for you.

[amercader]

thanks @tristndev , CKAN core itself supports the CKAN_SITE_URL env var, so that's why we use this variant here

[tristndev]

But further down (Line 79), the variable CKAN__SITE_URL with double underscore is used - where is this provided?

[amercader]

Aha! You are right, we should change line 79 to use CKAN_SITE_URL instead, or tbh just delete it as it obviously is not working as intended

[tristndev]

I have opened another pull request with your requested change here #91