Dockerfile

@@ -1,3 +1,3 @@
-FROM docker.io/moby/buildkit:v0.25.1
+FROM docker.io/moby/buildkit:v0.25.1-rootless
 COPY entrypoint.sh /usr/local/bin/
 ENTRYPOINT ["entrypoint.sh"]

entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/sh -ex
 
 export DOCKER_CONFIG="$HOME/.docker"
 mkdir -p "$DOCKER_CONFIG"
@@ -7,13 +7,13 @@ mkdir -p "$DOCKER_CONFIG"
 [ -f .env ] && . ./.env
 
 if [ -z "$IMAGEAPP" ]; then
-    IMAGEAPP="${GITHUB_SERVER_URL#*://}/$INPUT_IMAGE"
+    REGISTRY="$(echo "$GITHUB_SERVER_URL" | sed 's .*://  ')"
+    IMAGEAPP="$REGISTRY/$INPUT_IMAGE"
 fi
 
 if [ "$INPUT_CACHE" = true ]; then
-    IMAGECACHE="${IMAGEAPP%:*}/cache"
-    set -- --import-cache "type=registry,ref=$IMAGECACHE" \
-           --export-cache "type=registry,ref=$IMAGECACHE"
+    set -- --import-cache "type=registry,ref=$IMAGEAPP/cache" \
+           --export-cache "type=registry,ref=$IMAGEAPP/cache"
 fi
 
 cat <<EOF > "$DOCKER_CONFIG/config.json"
@@ -26,12 +26,6 @@ cat <<EOF > "$DOCKER_CONFIG/config.json"
   }
 }
 EOF
-
-DIR="$(dirname "$INPUT_DOCKERFILE")"
-FILENAME="$(basename "$INPUT_DOCKERFILE")"
-
-set -x
-buildctl-daemonless.sh build --frontend dockerfile.v0 "$@" \
-    -o "type=image,name=$IMAGEAPP,push=true" \
-    --opt filename="$FILENAME" \
-    --local context="$DIR" --local dockerfile="$DIR"
+buildctl build "$@" -o "type=image,name=$IMAGEAPP,push=true" \
+    --local context="$(dirname "$INPUT_DOCKERFILE")" \
+    --local dockerfile="$INPUT_DOCKERFILE"