Update x86-64-21.02.7.yml

Author: dkyg666

.github/workflows/x86-64-21.02.7.yml

@@ -65,6 +65,7 @@ jobs:
               --user root \
               -v "${{ github.workspace }}/bin:/home/build/immortalwrt/bin" \
               -v "${{ github.workspace }}/files:/home/build/immortalwrt/files" \
+              -v "${{ github.workspace }}/x86-64/imm.config:/home/build/immortalwrt/.config" \
               -v "${{ github.workspace }}/x86-64/21.02/build.sh:/home/build/immortalwrt/build.sh" \
               -e PROFILE=$profile \
               -e INCLUDE_DOCKER=$include_docker \