Implement build-and-test Github Actions CI using AWS spot instances

.github/workflows/build-and-test-x86_64.yml

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+name: Build And Test (x86-64)
+
+on: [push, pull_request]
+
+jobs:
+  generate-runner-id:
+    runs-on: ubuntu-latest
+    steps:
+      - id: generate
+        name: Generate runner ID
+        run: |
+          RUNNER_ID=rr_runner_$(uuidgen|tr -d -)
+          echo "RUNNER_ID=$RUNNER_ID" >> "$GITHUB_OUTPUT"
+    outputs:
+      RUNNER_ID: ${{ steps.generate.outputs.RUNNER_ID }}
+
+  build-and-test-x86-64:
+    uses: ./.github/workflows/build-and-test.yml
+    needs: generate-runner-id
+    with:
+      architecture: x86_64
+      runner_id: ${{ needs.generate-runner-id.outputs.RUNNER_ID }}

.github/workflows/build-and-test.yml

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+name: Build And Test
+
+on:
+  workflow_call:
+    inputs:
+      architecture:
+        required: true
+        type: string
+      runner_id:
+        required: true
+        type: string
+
+jobs:
+  start-runner:
+    name: Start Runner
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Run :: Create and register AWS spot instance"
+        run: |2-
+          curl -s -X POST -H "Content-Type: application/json" --data "{\"operation\": \"create\", \"architecture\":\"${{ inputs.architecture }}\", \"label\": \"${{ inputs.runner_id }}\"}" https://gztdxwrnjh46z4ucjge5m4pxhu0vtfzs.lambda-url.us-east-2.on.aws
+
+  build-and-test:
+    name: Build And Test
+    runs-on:
+      - ${{ inputs.runner_id }}
+    needs:
+      - start-runner
+    steps:
+      - name: "Run :: Checkout repository"
+        uses: actions/checkout@v2
+
+      - name: "Run :: Build"
+        run: ./scripts/github-actions-build.sh
+
+      - name: "Run :: Test"
+        run: ./scripts/github-actions-test.sh
+
+  stop-runner:
+    name: Stop Runner
+    runs-on: ubuntu-latest
+    needs:
+      - start-runner
+      - build-and-test
+    if: ${{ always() }}
+    steps:
+      - name: "Run :: Terminate and unregister AWS spot instance"
+        run: |2-
+          curl -s -X POST -H "Content-Type: application/json" --data "{\"operation\": \"destroy\", \"label\": \"${{ inputs.runner_id }}\"}" https://gztdxwrnjh46z4ucjge5m4pxhu0vtfzs.lambda-url.us-east-2.on.aws

scripts/github-actions-build.sh

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+#!/bin/bash
+
+set +x # echo commands
+set -e # default to exiting on error"
+
+uname -a
+
+sudo apt-get install -y rpm ccache cmake g++ pkg-config zlib1g-dev git python-dev-is-python3 libacl1-dev ninja-build manpages-dev capnproto libcapnp-dev gdb lldb python3-pexpect
+
+mkdir obj
+cd obj
+cmake -G Ninja -DCMAKE_BUILD_TYPE=DEBUG -Dstaticlibs=FALSE ..
+ninja

scripts/github-actions-test.sh

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+#!/bin/bash
+
+set +x # echo commands
+set -e # default to exiting on error"
+
+# Enable perf events for rr
+echo 0 | sudo tee /proc/sys/kernel/perf_event_paranoid
+# Enable ptrace-attach to any process. This lets us get more data when tests fail.
+echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
+# Disable AppArmor restrictions on user namespaces, which our tests need to use
+(echo 0 | sudo tee /proc/sys/kernel/apparmor_restrict_unprivileged_userns) || true
+let halfproc=`nproc`/2
+ctest -j$halfproc --verbose