templates/web's docker_image resource used a `build` block, so every
first-use of a new Dockerfile hash triggered a from-scratch build
(including the ~15-20min Rust toolchain compile) right at `terraform
apply` time - i.e. while someone was waiting to create a workspace.
Adds a build-web-image job to coder-templates.yml that builds and pushes
git.octoturge.com/octo-tech/profiles-web:<dockerfile-sha1> to this
instance's container registry, tagged identically to what
docker_image.web now computes and pulls (no build block). provision now
depends on build-web-image so a template never gets pushed pointing at
an image that isn't there yet. Skips the build entirely if that tag's
already in the registry, so an unrelated templates/* change doesn't
pay any cost.
Runs on a new dedicated "docker-build" runner (profiles-web-build),
scoped to just this repo via a repo-level registration token, with
host Docker socket access - deliberately not added to the existing
shared runner-1, which has no such access and stays untouched. Repo is
public, so the pulled image needs no registry auth; the push does, via
a new GITEA_PACKAGE_TOKEN repo secret (write:package scope).
Since CI and this Coder deployment share the same Docker daemon, the
"pull" is normally a same-host cache hit, not a real network pull.
Verified: `terraform validate` passes against the updated
templates/web/main.tf (run directly inside the coder-server container,
which has terraform embedded).
octoturge
6de3196faa