Get the spellcheck CI job to pass again by:
* Fixing the actual spelling issues it caught in the project.
* Excluding generated files from the scan, since they are not
written by us.
* Excluding translation files, whose content is not necessarily in
English and would trigger false positives.
Builds through the Docker API of the Podman service receive none of the
proxy variables in their RUN steps and fail systematically because of
the proxy rejection. Plain HTTP connections are also rejected by the
proxy with a HTTP 405 method error.
- Passes http_proxy, https_proxy and no_proxy from the shell as build args
- Make the Debian mirror of the agents image a build argument and
override it for bureautix to force https usage
lebaudantoine