wkg oci push fails if the image ref contains any uppercase letters

[yoshuawuyts]

WebAssembly/wasi-io#94 was fun to debug - I'm not sure if this is a bug in wkg or a limitation of the OCI reference format?

[brooksmtownsend]

I've run into this before 😕 Looks like you have the right workaround. This might just be another GitHub quirk like #40

[yoshuawuyts]

I believe #40 was due to the remote, but this error was local to wkg? Though if this needs to be rejected, a better error message provided by wkg here would have been helpful.

[joonas]

This is actually a requirement of the OCI Distribution spec (which is implemented by GitHub's Container Registry), see the Pulling manifests section for full explanation. In short:

<name> refers to the namespace of the repository. ... Throughout this document, <name> MUST match the following regular expression:

[a-z0-9]+([._-][a-z0-9]+)*(/[a-z0-9]+([._-][a-z0-9]+)*)*

[thomastaylor312]

Yeah I think I agree with @joonas' comment on bytecodealliance/wkg-github-action#5. We might be able to expose this as a flag, but not sure I'd just want to lowercase things automatically