update env args for docker build

.github/workflows/dev.yaml

@@ -43,7 +43,7 @@ jobs:
       - name: Build
         run: |
           docker pull gcr.io/porter-dev-273614/porter:dev
-          DOCKER_BUILDKIT=1 DOCKER_INLINE_CACHE=1 docker build . -t gcr.io/porter-dev-273614/porter:dev -f ./ee/docker/ee.Dockerfile.dev
+          DOCKER_BUILDKIT=1 BUILDKIT_INLINE_CACHE=1 docker build . -t gcr.io/porter-dev-273614/porter:dev -f ./ee/docker/ee.Dockerfile.dev
       - name: Push
         run: |
           docker push gcr.io/porter-dev-273614/porter:dev