Switch to CentOS Stream 8 for builds

CentOS 8 is EOL and is now replaced with CentOS Stream 8.

This images isn't available on Docker Hub unfortunately, so we grab it
from Quay.

diff --git a/.github/containers/centos8/Dockerfile b/.github/containers/centos8/Dockerfile
index 8beec7e2113f4910ab3345d722d80ed6876d3cc0..6bcff1a49ce7194bba43a85e4c84e30cdb6d4dd9 100644 (file)
--- a/.github/containers/centos8/Dockerfile
+++ b/.github/containers/centos8/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos:8
+FROM quay.io/centos/centos:stream8
 
 RUN dnf -y group install 'Development Tools'
 RUN dnf -y install sudo