Feat: add crane support

Dockerfile

@@ -1,3 +1,12 @@
-FROM gcr.io/kaniko-project/executor:v1.23.2
+FROM gcr.io/go-containerregistry/crane:v0.20.3 AS crane
+
+#####
+
+FROM gcr.io/kaniko-project/executor:v1.23.2-debug
 
 ADD rootca.pem /usr/local/share/ca-certificates/rootca.pem
+
+COPY --from=crane /ko-app/crane /bin/crane
+COPY entrypoint /kaniko/entrypoint.sh
+
+ENTRYPOINT ["/kaniko/entrypoint.sh"]

entrypoint.sh

@@ -0,0 +1,43 @@
+#!/busybox/sh
+set -e pipefail
+
+OLDIFS=$IFS
+
+REGISTRY="${INPUT_PUSH_REGISTRY}"
+REGISTRY_CERTIFICATE="${INPUT_REGISTRY_CERTIFICATE}"
+USERNAME="${INPUT_USERNAME:-$GITHUB_ACTOR}"
+PASSWORD="${INPUT_PASSWORD:-$GITHUB_TOKEN}"
+crane auth login "$REGISTRY" -u "$USERNAME" -p "$PASSWORD"
+
+IMAGE="$(echo "${INPUT_TAGS}" | cut -f1 -d':')"
+TAGS="${INPUT_TAGS:-$REGISTRY/$GITEA_REPO/$GITEA_REF_NAME}"
+
+DOCKERFILE="${INPUT_FILE}"
+CONTEXT="${INPUT_CONTEXT}"
+
+LABELS="--label org.opencontainers.image.created=$(date -u +"%Y-%m-%dT%H:%M:%S.%3NZ")"
+for label in $INPUT_LABELS; do
+  LABELS="$LABELS --label $label"
+done
+ARGS="$LABELS --context $CONTEXT --dockerfile $DOCKERFILE"
+
+if [ -n "$REGISTRY_CERTIFICATE" ]; then
+  ARGS="$ARGS --registry-certificate ${REGISTRY}:${REGISTRY_CERTIFICATE}"
+fi
+
+runKaniko() {
+  IFS=''
+  EXECUTOR="executor ${1} --reproducible --force --cleanup"
+  echo "Build with: ${EXECUTOR}"
+  eval "${EXECUTOR}"
+  IFS=$OLDIFS
+}
+
+echo "Building image $IMAGE"
+
+DESTINATION="--destination $IMAGE:latest --destination $TAGS"
+runKaniko "${ARGS} $DESTINATION $DIGEST"
+
+DIGEST=$(head -n 1 '/kaniko/build/image-tag-digest' | cut -f2 -d '@')
+echo "Image $IMAGE pushed"
+echo "Digest: $DIGEST"