Merge pull request #418 from stillwater-sc/snyk-fix-da47d9edd77abb137…

…5d6dcc259a6160c

[Snyk] Security upgrade ubuntu from mantic to 23.10

docker/Dockerfile.clang14

@@ -27,7 +27,7 @@ RUN cmake -D$target=ON  -DBUILD_CMD_LINE_TOOLS=ON -DBUILD_DEMONSTRATION=OFF .. &
 # RELEASE stage
 #FROM alpine:latest as release    # hitting a segfault during startup of some playground programs
 #FROM debian:buster-slim as release
-FROM ubuntu:mantic as release
+FROM ubuntu:23.10 as release
 LABEL Theodore Omtzigt
 
 #RUN apk add --no-cache libc6-compat libstdc++ cmake make bash gawk sed grep bc coreutils