use correct arm64 images in workflows

Author: vexxvakan

.github/workflows/build-workflow.yml

@@ -25,15 +25,15 @@ jobs:
             target: linux-x64
             build-cmd: bun run build:linux-x64
           # Linux ARM64 GLIBC builds (native ARM64 runner)
-          - os: ubuntu-latest-arm64
+          - os: ubuntu-24.04-arm
             target: linux-arm64
             build-cmd: bun run build:linux-arm64
           # Linux x64 MUSL builds (for Alpine, containers, static linking)
           - os: ubuntu-latest
             target: linux-x64-musl
             build-cmd: bun run build:linux-x64-musl
           # Linux ARM64 MUSL builds (native ARM64 runner)
-          - os: ubuntu-latest-arm64
+          - os: ubuntu-24.04-arm
             target: linux-arm64-musl
             build-cmd: bun run build:linux-arm64-musl
           # macOS x64 builds (Intel-based runner)
@@ -133,7 +133,7 @@ jobs:
       - name: Run tests on native architecture
         run: |
           # Only run full tests on native architecture builds
-          if [[ "${{ matrix.os }}" == "ubuntu-latest-arm64" ]] && [[ "${{ matrix.target }}" == *"arm64"* ]]; then
+          if [[ "${{ matrix.os }}" == "ubuntu-24.04-arm" ]] && [[ "${{ matrix.target }}" == *"arm64"* ]]; then
             echo "Running tests on native ARM64..."
             bun test
           elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]] && [[ "${{ matrix.target }}" == "linux-x64" ]]; then

scripts/TESTING_WORKFLOWS.md

@@ -212,10 +212,17 @@ docker rm test-registry
 
 ## GitHub Actions ARM64 Runner Issues
 
-ARM64 runners (`ubuntu-latest-arm64`) can experience delays:
+ARM64 runners for public repositories use specific labels:
 
-- **Provisioning**: Can take around 15 minutes to start
-- **Availability**: Limited runner pool, may queue for extended periods
-- **Stuck appearance**: The workflow may appear stuck with a non-pulsating yellow circle
+- `ubuntu-24.04-arm` - Ubuntu 24.04 ARM64 runner
+- `ubuntu-22.04-arm` - Ubuntu 22.04 ARM64 runner
+- **Note**: `ubuntu-latest-arm64` does NOT exist!
+
+ARM64 runners can experience delays:
+
+- **Public Preview**: Currently in public preview (as of Jan 2025)
+- **Free for Public Repos Only**: Not available for private repositories
+- **Queue Times**: May experience longer wait times during peak hours
+- **Performance**: 4 vCPU runners with Cobalt 100-based processors
 
 This provides the most accurate testing environment while keeping production safe.