can't find node executable after start - ENOENT after downloading - how to resolve?

[jnardone]

Starting this afternoon our setup-node step has been failing

Run actions/setup-node@v1
/usr/bin/docker exec  7aabfd1f998efb12b7a971c55e82c4a0aee999758507dc23f91348da8cb83f0e sh -c "cat /etc/*release | grep ^ID"
Container distribution is alpine. Running JavaScript Action with external tool: node12_alpine
/bin/tar xz -C /__w/_temp/34df03ef-d1e8-4607-85a2-b8762e145e3c -f /__w/_temp/f657e559-8336-4e37-905a-d52c1375f98a
/__t/node/12.16.2/x64/bin/node --version
##[error]There was an error when attempting to execute the process '/__t/node/12.16.2/x64/bin/node'. This may indicate the process failed to start. Error: spawn /__t/node/12.16.2/x64/bin/node ENOENT

Not sure where to go next with this; this is early in our pipeline. Our job starts with

jobs:
  validate:
    runs-on: ubuntu-latest
    container:
      image: node:12-alpine
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1
        with:
          node-version: '12.x'

How do I troubleshoot from here?

EDIT: debug logs

Run actions/setup-node@v1
/usr/bin/docker exec  871afccacc839257225ce1667d032e91aa2e20626955b1f20118ed1ecc6d23a1 sh -c "cat /etc/*release | grep ^ID"
##[debug]ID=alpine
Container distribution is alpine. Running JavaScript Action with external tool: node12_alpine
##[debug]isExplicit: 12.16.1
##[debug]explicit? true
##[debug]checking cache: /__t/node/12.16.1/x64
##[debug]not found
##[debug]Downloading https://nodejs.org/dist/v12.16.1/node-v12.16.1-linux-x64.tar.gz
##[debug]Destination /__w/_temp/24fb3137-41c4-4939-9f9a-18863ef9349b
##[debug]download complete
##[debug]Checking tar --version
##[debug]tar (busybox) 1.31.1
/bin/tar xz -C /__w/_temp/a7f58beb-1b23-499e-9cd2-f2a00abb8f17 -f /__w/_temp/24fb3137-41c4-4939-9f9a-18863ef9349b
##[debug]Caching tool node 12.16.1 x64
##[debug]source dir: /__w/_temp/a7f58beb-1b23-499e-9cd2-f2a00abb8f17/node-v12.16.1-linux-x64
##[debug]destination /__t/node/12.16.1/x64
##[debug]finished caching tool
::add-path::/__t/node/12.16.1/x64/bin
/__t/node/12.16.1/x64/bin/node --version
##[error]There was an error when attempting to execute the process '/__t/node/12.16.1/x64/bin/node'. This may indicate the process failed to start. Error: spawn /__t/node/12.16.1/x64/bin/node ENOENT
##[debug]Node Action run completed with exit code 1
##[debug]Finishing: Run actions/setup-node@v1

[jnardone]

This appears to be because the downloaded binary from nodejs.org is not right for alpine, but I don't know how our code has worked for 2 months until today...

[bryanmacfarlane]

not sure, but here's the issue tracking considering alpine support: #109