Optimize docker image (#1160)

* Updated workflow to checkout

* Added kindlegen ln -s instruction

.github/workflows/docker-publish.yml

@@ -20,6 +20,9 @@ jobs:
   build_and_publish_base_image:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
@@ -54,6 +57,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64,linux/arm64,linux/arm/v7
+          context: .
           push: true
           tags: |
             ${{ steps.meta.outputs.tags }}

Dockerfile

@@ -59,6 +59,7 @@ RUN \
     ln -s /opt/kcc/kcc-c2e.py /usr/local/bin/c2e && \
     ln -s /opt/kcc/kcc-c2p.py /usr/local/bin/c2p && \
     ln -s /opt/kcc/entrypoint.sh /usr/local/bin/entrypoint && \
+    ln -s /opt/kcc/kindlegen/kindlegen /usr/local/bin/kindlegen && \
     cat /opt/kcc/kindlecomicconverter/__init__.py | grep version | awk '{print $3}' | sed "s/'//g" > /IMAGE_VERSION
 
 LABEL com.kcc.name="Kindle Comic Converter" \