Docker: Upgrade builds to Ubuntu 24.04 and LLVM 21

Author: mikebeaton

Dockerfiles/oc-dev/Dockerfile

@@ -1,8 +1,9 @@
-ARG OC_DEV_DOCS_BASE=ubuntu:22.04
+ARG OC_DEV_BASE=ubuntu:24.04
+ARG OC_DEV_DOCS_BASE=ubuntu:24.04
 ARG OC_DEV_PLATFORM=$BUILDPLATFORM
-FROM --platform=$OC_DEV_PLATFORM ubuntu:22.04 AS oc-dev-edk2
+FROM --platform=$OC_DEV_PLATFORM $OC_DEV_BASE AS oc-dev-edk2
 
-ARG OC_DEV_EDK2_LLVM_VER=15
+ARG OC_DEV_EDK2_LLVM_VER=21
 ARG DEBIAN_FRONTEND=noninteractive
 
 SHELL [ "/bin/bash", "-c" ]