enable docker buildkit (#35)

Author: ali-behjati

.github/workflows/evm-price-pusher-image-push.yml

@@ -40,7 +40,7 @@ jobs:
         id: ecr_login
       - run: |
           cd pyth-evm-price-pusher
-          docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
+          DOCKER_BUILDKIT=1 docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
           docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
         env:
           ECR_REGISTRY: public.ecr.aws