Issue: GITHUB_ENV is not guaranteed to exist, causes a permission denied error

[blampe]

Upgraded act while trying to debug another issue and ran into this bug which broke a step which was working fine on 0.21.

System information

• Operating System: Darwin Kernel Version 20.5.0
• Architecture: x86_64
• Apple M1: No
• Docker version: 20.10.6, build 370c289
• Docker image used in act: catthehacker/ubuntu:full-20.04
• act version: 05bce00

Expected behaviour

Runs successfully.

Actual behaviour

[Foo/foo-2] Exec command '[node /var/run/act/actions/aws-actions-configure-aws-credentials@v1/dist/index.js]'
[Foo/foo-1]   ❗  ::error::EACCES: permission denied, open '/var/run/act/workflow/envs.txt'
[Rails Tests/rails_tests-1]   ❌  Failure - Configure AWS Credentials

Workflow and/or repository

name: Foo
jobs:
  foo:
    steps:
      - uses: aws-actions/configure-aws-credentials@v1