[chore](trx-rs): run the frontend job in the SDK image

The frontend job was added while CI still targeted host-executor runners,
so it never gained the `container:` key the lint and test jobs use.  On
the Docker executor it lands on a bare job container and fails the same
way the Rust jobs did before this branch: `npm` is missing, the Chromium
install shells out to `sudo apt-get`, and `npm run verify-generated`
regenerates the Rust wire contracts, so it needs `cargo` too.

Run it in the SDK image, which already ships Node.js, Chromium at the
path the browser smoke test defaults to, and the pinned Rust toolchain.
Installing Chromium per run is then redundant.

Drop the job's trailing `reuse lint`.  The SDK image deliberately carries
nothing REUSE-related, and the separate `reuse` job lints the whole
repository with the upstream action, generated assets included.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GdyUjuXejCEfiub675z6cz
Signed-off-by: Stan Grams <sjg@haxx.space>

.gitea/workflows/ci.yml

@@ -2,10 +2,11 @@
 #
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-# CI for the Docker-executor runner (VM). The lint/test jobs run inside the
-# shared trx-rs SDK image (container/Containerfile), which bakes in the pinned
-# Rust toolchain and all build dependencies. The reuse job uses the upstream
-# Docker action, which the Docker executor launches as a sibling container.
+# CI for the Docker-executor runner (VM). The lint, test and frontend jobs run
+# inside the shared trx-rs SDK image (container/Containerfile), which bakes in
+# the pinned Rust toolchain, Node.js, Chromium and all build dependencies. The
+# reuse job uses the upstream Docker action, which the Docker executor launches
+# as a sibling container.
 
 name: CI
 
@@ -53,6 +54,7 @@ jobs:
 
   frontend:
     runs-on: ubuntu-latest
+    container: git.haxx.space/sjg/trx-rs/sdk:latest
     defaults:
       run:
         working-directory: src/trx-client/trx-frontend/trx-frontend-http/frontend
@@ -73,15 +75,12 @@ jobs:
         run: npm run lint
       - name: Test
         run: npm test
-      - name: Install browser smoke dependency
-        run: command -v chromium >/dev/null || (sudo apt-get update && sudo apt-get install -y --no-install-recommends chromium)
+      # Chromium comes from the SDK image at the path the smoke test defaults
+      # to, so there is nothing to install here.
       - name: Browser smoke test
         run: npm run test:browser
       - name: Verify generated assets
         run: npm run verify-generated
-      - name: Verify generated-file licensing
-        working-directory: .
-        run: reuse lint
 
   reuse:
     runs-on: ubuntu-latest