Run CI orchestration and setup as Java 25 source programs

.gitea/workflows/build.yaml

@@ -22,18 +22,18 @@ jobs:
       - name: Identify workflow attempt
         # Gitea 1.25 does not populate gitea.run_attempt. Use a unique value for
         # container names and diagnostic artifacts, including reruns of one SHA.
-        run: printf 'CI_RUN_ATTEMPT=%s\n' "$(date -u +%Y%m%d%H%M%S%N)" >> "$GITHUB_ENV"
+        run: java ci/Ci.java attempt
       - name: Build and test both images
-        run: timeout --signal=TERM --kill-after=60s 75m bash ci/verify.sh
+        run: java ci/Ci.java verify
       - name: Publish verified main images
         if: success() && gitea.ref == 'refs/heads/main'
         env:
           REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
           REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
-        run: timeout --signal=TERM --kill-after=60s 15m bash ci/publish.sh
+        run: java ci/Ci.java publish
       - name: Collect diagnostics and clean up test containers
         if: always()
-        run: bash ci/cleanup.sh
+        run: java ci/Ci.java cleanup
       - name: Retain diagnostics for fourteen days
         if: always()
         uses: https://github.com/actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5