dockerfile selection

.github/workflows/nginx.yml

@@ -17,6 +17,7 @@ jobs:
     name: nginx
     runs-on: ubuntu-24.04
     strategy:
+      fail-fast: false
       matrix:
         image: ["ubuntu:24.04", "debian:11", "alpine:3.20"]
         nginx: ["1.27.3", "1.26.2", "1.24.0", "1.22.1"]
@@ -40,12 +41,19 @@ jobs:
             --cache-to type=local,dest=/tmp/buildx-cache/express-new \
             --load \
             test/backend/simple_express
+      - name: Choose Dockerfile
+        run: |
+          if [ ${{ matrix.image }} == "alpine"* ]; then
+            echo "dockerfile=Dockerfile_alpine" >> $GITHUB_ENV
+          else
+            echo "dockerfile=Dockerfile" >> $GITHUB_ENV
+          fi
       - name: build nginx docker
         run: |
           cd instrumentation/nginx
           docker build -t otel-nginx-test/nginx \
             --build-arg image=${{ matrix.image }} \
-            -f test/Dockerfile \
+            -f test/${{ env.dockerfile }} \
             --cache-from type=local,src=/tmp/buildx-cache/nginx \
             --cache-to type=local,dest=/tmp/buildx-cache/nginx-new \
             --load \
@@ -68,7 +76,7 @@ jobs:
         run: |
           cd instrumentation/nginx
           mkdir -p /tmp/otel_ngx/
-          docker build -f test/Dockerfile \
+          docker build -f test/${{ env.dockerfile }} \
           --build-arg image=${{ matrix.image }} \
           --target export \
           --output type=local,dest=/tmp/otel_ngx .