Deploy collab like nightly (#7174)

After this change we'll be able to push a tag to github to deploy to
collab.

The advantages of this are that there's no longer a separate step to
first
build the image, and then deploy it.

In the future I'd like to make this happen more automatically (maybe as
part of
bump nightly).

Release Notes:

- N/A

Dockerfile

@@ -6,6 +6,9 @@ COPY . .
 
 # Compile collab server
 ARG CARGO_PROFILE_RELEASE_PANIC=abort
+ARG GITHUB_SHA
+
+ENV GITHUB_SHA=$GITHUB_SHA
 RUN --mount=type=cache,target=./script/node_modules \
     --mount=type=cache,target=/usr/local/cargo/registry \
     --mount=type=cache,target=./target \