A regular (non-regex) file: upstream needs to strip the prefix so that it is equivalent to "mounting" the specified directory under the configured path in the URL space, but with regex rewriting the target path is determined by the rewriteTarget.
Fixesoauth2-proxy/oauth2-proxy#2242
You must explicitly configure oauth2-proxy (alpha config only) with which parameters are allowed to pass through, and optionally provide an allow-list of valid values and/or regular expressions for each one. Note that this mechanism subsumes the functionality of the "prompt", "approval_prompt" and "acr_values" legacy configuration options, which must be converted to the equivalent YAML when running in alpha config mode.
"go mod download" does not depend on the VERSION env var, so moving the ARG directive after the RUN will allow better use of the Docker build cache - subsequent builds on the same machine need only re-run the "go mod download" if go.mod or go.sum has changed, rather than re-running it any time the VERSION value passed from the Makefile has changed
Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>
Ian Roberts
