Fix and scale up GH workflows by switching to GH hosted runners (#75)

* Use GH hosted runner for all workflows.
* Pin to Ubuntu 22.04.
* Bump Alpine to hopefully work around the MQTT compilation failure.

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ env:
 
 jobs:
   build:
-    runs-on: self-hosted
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v3
     - name: Ensure correct Rust toolchain version

.github/workflows/coverage.yml

@@ -12,7 +12,7 @@ jobs:
   coverage:
     name: coverage
     if: ${{ github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch' }}
-    runs-on: self-hosted
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/pkg-min.yml

@@ -11,8 +11,6 @@ jobs:
     uses: NLnetLabs/ploutos/.github/workflows/pkg-rust.yml@v7
 
     with:
-      runs_on: self-hosted
-
       #package_build_rules: pkg/rules/packages-to-build.yml
       package_test_scripts_path: pkg/test-scripts/test-<package>.sh
 

.github/workflows/pkg.yml

@@ -23,11 +23,6 @@ jobs:
     #  DOCKER_HUB_TOKEN: ${{ secrets.DOCKER_HUB_TOKEN }}
 
     with:
-      # TODO: When ready to make this repository public, remove this `runs_on` when this repository is made public.
-      # Until then run on self-hosted runners at the office to avoid consuming the GitHub Actions credits that we
-      # also use for other things because private repositories use a limited budget of per-organization credits.
-      runs_on: self-hosted
-
       docker_org: nlnetlabs
       docker_repo: rotonda
       docker_build_rules: pkg/rules/docker-images-to-build.yml

Dockerfile

@@ -44,7 +44,7 @@ ARG MODE=build
 # ========
 #
 # Only used when MODE=build.
-ARG BASE_IMG=alpine:3.18
+ARG BASE_IMG=alpine:3.19
 
 
 # CARGO_ARGS