CI: speed up build

.gitea/workflows/pages-deploy.yml

@@ -35,29 +35,11 @@ jobs:
           # If using the 'assets' git submodule from Chirpy Starter, uncomment above
           # (See: https://github.com/cotes2020/chirpy-starter/tree/main/assets)
 
-      - name: Setup Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.3
-          bundler-cache: true
-
-      - name: Build site
-        run: bundle exec jekyll b -d "_site${{ steps.pages.outputs.base_path }}"
-        env:
-          JEKYLL_ENV: "production"
-
-      - name: Test site
-        run: |
-          bundle exec htmlproofer _site \
-            \-\-disable-external \
-            \-\-ignore-urls "/^http:\/\/127.0.0.1/,/^http:\/\/0.0.0.0/,/^http:\/\/localhost/"
-
       - name: Build Docker image
         run: |
-          echo "FROM nginx:alpine" > Dockerfile
-          echo "COPY _site /usr/share/nginx/html" >> Dockerfile
-          echo "EXPOSE 80" >> Dockerfile
-          docker build -t ${CI_REGISTRY_IMAGE:-git.pixx.cz/${{ gitea.repository }}}:${{ gitea.sha }} .
+          docker build \
+            -t git.pixx.cz/${{ gitea.repository }}:${{ gitea.sha }} \
+            -t git.pixx.cz/${{ gitea.repository }}:latest .
 
       - name: Login to Gitea Container Registry
         run: |
@@ -66,8 +48,6 @@ jobs:
 
       - name: Push Docker image
         run: |
-          docker tag ${CI_REGISTRY_IMAGE:-git.pixx.cz/${{ gitea.repository }}}:${{ gitea.sha }} \
-            ${CI_REGISTRY_IMAGE:-git.pixx.cz/${{ gitea.repository }}}:latest
           docker push ${CI_REGISTRY_IMAGE:-git.pixx.cz/${{ gitea.repository }}}:${{ gitea.sha }}
           docker push ${CI_REGISTRY_IMAGE:-git.pixx.cz/${{ gitea.repository }}}:latest
 

Dockerfile

@@ -0,0 +1,24 @@
+# --- Stage 1: Build & Test ---
+FROM ruby:3.3 AS builder
+
+# Instalace závislostí pro html-proofer (pokud jsou potřeba)
+RUN apt-get update && apt-get install -y build-essential
+
+WORKDIR /srv/jekyll
+COPY Gemfile* ./
+RUN bundle install
+
+COPY . .
+
+# Samotný build webu
+RUN JEKYLL_ENV=production bundle exec jekyll build
+
+# TEST: Pokud htmlproofer skončí chybou, celý Docker build selže
+RUN bundle exec htmlproofer ./_site \
+    --disable-external \
+    --ignore-urls "/^http:\/\/127.0.0.1/,/^http:\/\/0.0.0.0/,/^http:\/\/localhost/"
+
+# --- Stage 2: Final Image ---
+FROM nginx:alpine
+COPY --from=builder /srv/jekyll/_site /usr/share/nginx/html
+EXPOSE 80