DEV: Build image with ruby 3.4 for testing

Author: OsamaSayegh

.github/workflows/build.yml

@@ -156,6 +156,37 @@ jobs:
         run: |
           docker tag discourse/base:2.0.${{ env.TIMESTAMP }}-main-${{ matrix.arch }} discourse/base:aarch64
           docker push discourse/base:aarch64
+  ruby_3_4:
+    runs-on: ubuntu-24.04${{ ((github.event_name != 'schedule') && '-8core') || '' }}
+    timeout-minutes: 30
+    needs: base
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+      - name: build slim image
+        run: |
+          cd image && ruby auto_build.rb base_slim --build-arg="RUBY_VERSION=3.4.7"
+      - name: build release image
+        run: |
+          cd image && ruby auto_build.rb base
+      - name: build test_build image
+        run: |
+          cd image && ruby auto_build.rb discourse_test_build
+      - name: run specs
+        run: |
+          docker run --rm -e RUBY_ONLY=1 -e USE_TURBO=1 -e SKIP_PLUGINS=1 -e SKIP_LINT=1 discourse/discourse_test:build
+      - name: Print summary
+        run: |
+          docker images discourse/base
+      - name: push to dockerhub
+        if: success() && (github.ref == 'refs/heads/main')
+        env:
+          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
+        run: |
+          docker login --username discoursebuild --password $DOCKERHUB_PASSWORD
+          docker tag discourse/base:build discourse/base:release-ruby-3.4.7
+          docker push discourse/base:release-ruby-3.4.7
   push_multi_arch_manifests:
     runs-on: ubuntu-latest
     needs: [base, timestamp]