fixes for remote docker buildx building

build_system.sh

@@ -58,7 +58,7 @@ docker buildx build -f Dockerfile.agnos --check $DIR
 
 # Start build and create container
 echo "Building agnos-builder docker image"
-BUILD="docker build"
+BUILD="docker buildx build --load"
 if [ ! -z "$NS" ]; then
   BUILD="nsc build --load"
 fi
@@ -67,14 +67,14 @@ echo "Creating agnos-builder container"
 CONTAINER_ID=$(docker container create --entrypoint /bin/bash agnos-builder:latest)
 
 # Check agnos-meta-builder Dockerfile
-docker buildx build -f Dockerfile.builder --check $DIR \
+docker buildx build --load -f Dockerfile.builder --check $DIR \
   --build-arg UNAME=$(id -nu) \
   --build-arg UID=$(id -u) \
   --build-arg GID=$(id -g)
 
 # Setup mount container for macOS and CI support (namespace.so)
 echo "Building agnos-meta-builder docker image"
-docker buildx build -f Dockerfile.builder -t agnos-meta-builder $DIR \
+docker buildx build --load -f Dockerfile.builder -t agnos-meta-builder $DIR \
   --build-arg UNAME=$(id -nu) \
   --build-arg UID=$(id -u) \
   --build-arg GID=$(id -g)