fix: add pull:true to docker-publish for fresh base images

The docker-publish.yml workflow was missing pull:true, causing it
to use cached Alpine images with vulnerable c-ares 1.34.5-r0.

This completes the fix across all three Docker workflows:
- docker-build.yml ✓
- docker-publish.yml ✓ (this commit)
- security-weekly-rebuild.yml ✓

Resolves CVE-2025-62408 (c-ares)

.github/workflows/docker-build.yml

@@ -110,6 +110,7 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          pull: true  # Always pull fresh base images to get latest security patches
           cache-from: type=gha
           cache-to: type=gha,mode=max
           build-args: |

.github/workflows/docker-publish.yml

@@ -114,6 +114,8 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          # Always pull fresh base images to get latest security patches
+          pull: true
           cache-from: type=gha
           cache-to: type=gha,mode=max
           build-args: |

.github/workflows/security-weekly-rebuild.yml

@@ -71,6 +71,7 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           no-cache: ${{ github.event_name == 'schedule' || inputs.force_rebuild }}
+          pull: true  # Always pull fresh base images to get latest security patches
           build-args: |
             VERSION=security-scan
             BUILD_DATE=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.created'] }}
@@ -121,8 +122,8 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Checking key security packages:" >> $GITHUB_STEP_SUMMARY
           echo '```' >> $GITHUB_STEP_SUMMARY
-          docker run --rm ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }} \
-            sh -c "apk info c-ares curl libcurl openssl" >> $GITHUB_STEP_SUMMARY
+          docker run --rm --entrypoint "" ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }} \
+            sh -c "apk update >/dev/null 2>&1 && apk info c-ares curl libcurl openssl" >> $GITHUB_STEP_SUMMARY
           echo '```' >> $GITHUB_STEP_SUMMARY
 
       - name: Create security scan summary