util-docker: Improve Docker gcc and clang builder

1. Uses the all-dependencies image as the base image.
2. Has all compilers use Ubuntu 24.04.

Notes: This change implitly changes our supported compilers to GCC v10
to v13 and Clang v14 to v18. This will be fully incorporated into the
project later.

Change-Id: Id8e2141ea64a34c7e3532605f6ecb7d9ccb76951

util/dockerfiles/gcc-compiler/Dockerfile

@@ -0,0 +1,14 @@
+FROM --platform=${BUILDPLATFORM} ghcr.io/gem5/ubuntu-24.04_all-dependencies:latest
+
+ARG version=13 # Version of GCC to install in this image. Default is 13.
+
+RUN apt -y update && \
+    apt -y install gcc-${version} g++-${version} && \
+    update-alternatives --install \
+        /usr/bin/g++ g++ /usr/bin/g++-${version} 100 && \
+    update-alternatives --install \
+        /usr/bin/gcc gcc /usr/bin/gcc-${version} 100 && \
+    update-alternatives --install \
+        /usr/bin/c++ c++ /usr/bin/g++-${version} 100 && \
+    update-alternatives --install \
+        /usr/bin/cc cc /usr/bin/gcc-${version} 100