Composite Actions fail to overwrite env if it is already set #1899
Description
Describe the bug
Setting an env that is already set in a composite action causes the value to not be set as expected.
To Reproduce
Setup a composite action
using: "composite"
steps:
- name: set env
shell: bash
run: |
VAR1=$RANDOM
echo "MY_VAR1=$(echo $VAR1)" >> $GITHUB_ENV
echo $VAR1
echo 'create finished'
# Show ref information
- name: Show ref information
run: |
echo 'random1'
echo $MY_VAR1
echo 'env-random1'
echo "${{ env.MY_VAR1 }}"
echo 'read finished'
shell: bash
Call it twice locally using uses: ./{path}
Notice the second time the value it reads is incorrect.
Expected behavior
A clear and concise description of what you expected to happen.
Runner Version and Platform
2.291.1 linux