Docker builds in GitHub actions (#3523)

## Issue Addressed

I think the antithesis is failing due to an OOM which may be resolved by updating the ubuntu image it runs on. The lcli build looks like it's failing because the image lacks the `libclang` dependency



Co-authored-by: realbigsean <sean@sigmaprime.io>

.github/workflows/docker-antithesis.yml

@@ -15,7 +15,7 @@ env:
 
 jobs:
     build-docker:
-        runs-on: ubuntu-18.04
+        runs-on: ubuntu-22.04
         steps:
             - uses: actions/checkout@v2
             - name: Update Rust