busted-gha-ubuntu-docker (#510)

Summary:

- Short term fix to avoid defective github action runner.
- Non standard runnner version pin.

Author: general-kroll-4-life

.github/actionlint.yaml

@@ -2,6 +2,7 @@ self-hosted-runner:
   # Labels of self-hosted runner in array of string
   labels:
     - ubuntu-latest-m
+    - ubuntu-22-04-m
     - arm-ubuntu-22-04-runner-one
     - macos-13 # should not be necessary
     - macos-14 # should not be necessary

.github/workflows/build.yml

@@ -206,7 +206,7 @@ jobs:
 
   linuxbuild:
     name: Linux Build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: ${{ vars.DEFAULT_JOB_TIMEOUT_MIN == '' && 120 || vars.DEFAULT_JOB_TIMEOUT_MIN }}
     steps:
 
@@ -1081,7 +1081,7 @@ jobs:
   ##
   dockerbuild:
     name: Docker Build
-    runs-on: ubuntu-latest-m
+    runs-on: ubuntu-22-04-m
     timeout-minutes: ${{ vars.DEFAULT_JOB_TIMEOUT_MIN == '' && 120 || vars.DEFAULT_JOB_TIMEOUT_MIN }}
     strategy:
       fail-fast: false
@@ -1366,7 +1366,7 @@ jobs:
         python cicd/python/build.py --robot-test-integration --config='{ "variables":  { "EXECUTION_PLATFORM": "docker" } }'
 
   dockermerge:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs:
       - dockerbuild
     steps:

docs/CICD.md

@@ -17,7 +17,7 @@ Summary:
     - This pattern is only required because if tag pushes are done concurrently, then identical multi-architecture tags are clobbered in a reverse race condition. 
     - **NOTE**: The QEMU build for linux/arm64 is **very slow**.  On the order of 30 minutes.  This is currently unavoidable.
     - **TODO**: Migrate linux/arm64 docker build to native once GHA supports this platform as a first class citizen.
-    - ~~**DANGER**: New pattern depends entirely on [docker manifest](https://docs.docker.com/reference/cli/docker/manifest/), which is marked "experimental" by the vendor.  Per [this stackoverflow answer](https://stackoverflow.com/a/66337328), in spite of fundamental instability, this is still the best option.~~
+    - **NOTE**.  Be careful selecting from [the available github actions runners](https://github.com/actions/runner-images).  Some runnner instances may be incompatible with assumed toolchain.
 
 
 ## Secrets