Rollup merge of #135623 - marcoieni:mingw-check-tidy-dockerfile, r=Kobzol

ci: use ghcr ubuntu image for mingw-check-tidy

Author: matthiaskrgr

src/ci/docker/host-x86_64/mingw-check-tidy/Dockerfile

@@ -1,4 +1,6 @@
-FROM ubuntu:22.04
+# We use the ghcr base image because ghcr doesn't have a rate limit
+# and the mingw-check-tidy job doesn't cache docker images in CI.
+FROM ghcr.io/rust-lang/ubuntu:22.04
 
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \