Switched to Alpine Linux (fix of #1)

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+insert_final_newline = true
+tab_width = 4
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.yml]
+indent_size = 2

.github/workflows/docker.yml

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+name: Docker Image
+on:
+  push:
+    paths-ignore:
+      - "README.md"
+      - "LICENSE"
+      - ".editorconfig"
+      - ".github/workflows/auto-update.yml"
+  pull_request:
+jobs:
+  docker-image-alpine:
+    strategy:
+      matrix:
+        # MUST ORDER versions ascending
+        rewinged:
+          - version: "1.0.1"
+            version_minor: "1.0"
+            version_major: "1"
+            download_hash: "e52eb417a5c0fb5a3b08a858c8d10fa797627ada5373e203c196162d6a313697"
+            latest: true
+    env:
+      IMAGE_NAME_FULL: "fabiang/guetzli:${{ matrix.rewinged.version }}-alpine"
+      IMAGE_NAME_MINOR: "fabiang/guetzli:${{ matrix.rewinged.version_minor }}-alpine"
+      IMAGE_NAME_MAJOR: "fabiang/guetzli:${{ matrix.rewinged.version_major }}-alpine"
+      DOCKER_BUILDKIT: 1
+    runs-on: ubuntu-latest
+    name: "Alpine v${{ matrix.rewinged.version }}"
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jpribyl/action-docker-layer-caching@v0.1.1
+        continue-on-error: true
+      - name: Build Image
+        run: |
+          docker build -f alpine/Dockerfile \
+            -t '${{ env.IMAGE_NAME_FULL }}' \
+            \
+            --build-arg 'GUETZLI_VERSION=${{ matrix.rewinged.version }}' \
+            --build-arg 'GUETZLI_CHECKSUM_SHA256=${{ matrix.rewinged.download_hash }}' \
+            .
+      - name: Download Test Image
+        run: |
+          curl --fail -L -o bees.png https://raw.githubusercontent.com/google/guetzli/master/tests/bees.png
+      - name: Test Image
+        run: |
+          docker run -i -v $(pwd):/test -w /test --rm ${{ env.IMAGE_NAME_FULL }} bees.png bees.jpg
+      - name: Tag Minor
+        if: "${{ matrix.rewinged.version_minor != '' }}"
+        run: docker tag '${{ env.IMAGE_NAME_FULL }}' '${{ env.IMAGE_NAME_MINOR }}'
+      - name: Tag Major
+        if: "${{ matrix.rewinged.version_major != '' }}"
+        run: docker tag '${{ env.IMAGE_NAME_FULL }}' '${{ env.IMAGE_NAME_MAJOR }}'
+      - name: Docker Hub login
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        uses: azure/docker-login@v1
+        with:
+          username: ${{ secrets.CONTAINER_REGISTRY_USERNAME }}
+          password: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }}
+      - name: Push Image
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        run: |
+          docker push '${{ env.IMAGE_NAME_FULL }}'
+      - name: Push Image Minor
+        if: "${{ matrix.rewinged.version_minor != '' && github.ref == 'refs/heads/main' }}"
+        run: |
+          docker push '${{ env.IMAGE_NAME_MINOR }}'
+      - name: Push Image Major
+        if: "${{ matrix.rewinged.version_major != '' && github.ref == 'refs/heads/main' }}"
+        run: |
+          docker push '${{ env.IMAGE_NAME_MAJOR }}'

alpine/Dockerfile

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+FROM alpine
+
+ARG GUETZLI_VERSION=1.0.1
+ARG GUETZLI_CHECKSUM_SHA256=e52eb417a5c0fb5a3b08a858c8d10fa797627ada5373e203c196162d6a313697
+
+RUN apk add --update --no-cache --virtual .build \
+        gflags \
+        libpng-dev \
+        curl \
+        make \
+        g++ \
+    && apk add --update --no-cache libpng libstdc++ libgcc \
+    && curl -L --fail -o /tmp/guetzli.tar.gz \
+        https://github.com/google/guetzli/archive/refs/tags/v${GUETZLI_VERSION}.tar.gz \
+    && echo "${GUETZLI_CHECKSUM_SHA256}  /tmp/guetzli.tar.gz" > /tmp/guetzli_checksum.txt \
+    && sha256sum -w -c /tmp/guetzli_checksum.txt \
+    && mkdir /tmp/guetzli \
+    && tar -zxv --strip-components=1 -f /tmp/guetzli.tar.gz -C /tmp/guetzli \
+    && cd /tmp/guetzli \
+    && make \
+    && cp bin/Release/guetzli /usr/local/bin/guetzli \
+    && rm -f /tmp/guetzli.tar.gz \
+    && rm -rf /tmp/guetzli \
+    && rm -f /tmp/guetzli_checksum.txt \
+    && apk del .build
+
+WORKDIR /guetzli
+ENTRYPOINT ["guetzli"]