You can have beliefs. But most religions are actively anti-LGBT, so you are in a bit of a pickle here. Associating yourself with an intolerant group is going to attract hostility for people who fight intolerance. And the paradoxical situation you seem to be here leaves you on the wrong side of both sides.
If your beliefs are proper beliefs (and not weird crap from religions) no atheist can ever have an argument against that.
Containers are fine but docker is a pain in the ass that lazy people use when they don’t want to provide clean installation/packaging.
How many times have I seen an equivalent of “we use a custom fork of an obsolete version of an unmaintained package, so if you want to compile it yourself good luck because we forgot how we even did it. Alternatively, you can install the docker version”…