changed docker-build action

Author: bryangerlach

.github/workflows/docker-build.yml

@@ -18,7 +18,7 @@ jobs:
             echo "IMAGE_TAG=dev" >> "$GITHUB_ENV"
             echo "CREATE_IMAGE=true" >> "$GITHUB_ENV"
           elif [[ "${{ github.ref_type }}" == "tag" ]]; then
-            echo "IMAGE_TAG=${{ github.ref_name }}"
+            echo "IMAGE_TAG=${{ github.ref_name }}" >> "$GITHUB_ENV"
             echo "CREATE_IMAGE=true" >> "$GITHUB_ENV"
           else
             echo "CREATE_IMAGE=false" >> "$GITHUB_ENV"