Update Docker CI containers to Fedora32 and Ubuntu 20.04

Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
diff --git a/ci/build.sh b/ci/build.sh
index e0acc1a..0bbf140 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -3,7 +3,7 @@
 set -ex
 set -eo pipefail
 
-CONTAINERS="ubuntu1804 fedora30"
+CONTAINERS="ubuntu2004 fedora32"
 SDK_ONLY=0
 
 opt=$(getopt -o 's:Sab:p:c:hr' -- "$@")