Mount the whole playwright tests directory so that pwtests-ui can watch for changes without a restart.

[jyasskin]

This doesn't break pwtests-update; is there anything else I should check?

[dlaliberte]

James @jcscottiii might have some input regarding the docker configuration.

[jcscottiii]

LGTM 🎉

Some background:

• When this was initially set up, there were permission issues when the playwright container would write the screenshots. The container and host had different users and permissions. As a result, if one wrote something the other could not read it. This led to us creating the same user inside the container from the host and copying things instead of mounting them. We may be able to get rid of this final copy in the Dockerfile if you are not seeing any permission issues now. Could you remove that final COPY in the Dockerfile and try to run the playwright tests?

[jyasskin]

Just removing that final COPY fails because wait-for-app.sh and playwright.config.cjs aren't present anymore. Expanding the mount to include all of ./ mounts it over the installed node_modules directory, so that the playwright executable isn't present anymore. I've uploaded a change that narrows the copy to just the 2 files that are needed, but I'm not certain that the efficiency gain in avoiding the extra copies is worth confusing ourselves when we add a third file in the root directory that needs to be present in the container. What do you think?