End to end test suite can't retrieve env variables in Github Actions, but works fine in local

I am trying to set an environnement variable in Github Actions. It seems to be setup fine as I can display it using echo. Yet, my end-to-end suite doesn’t run because:

EnvVarError: env-var: "JWT_SECRET" is a required variable, but it was not set

Which is a nice message displayed by a package I am recently using: env-var
(might be related)

The JWT secret is knowingly hardcoded and shared. I am going step by step, it will finally be removed and changed. It’s in use for a pet side-project at the moment.

As we can see, github actions can set and display the env var. But can’t make it available for the test suite.

Here is the workflow:

name: Tests

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:

  backend-tests:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: back
    steps:
    - uses: actions/checkout@v2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v2
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'yarn'
        cache-dependency-path: '**/back/yarn.lock'
    - run: sudo /etc/init.d/mysql start
    - run: mysql -e 'CREATE DATABASE corposano' -uroot -proot
    - run: mysql -e 'ALTER USER 'root'@'localhost' IDENTIFIED BY ""' -uroot -proot
    - run: yarn
    - run: yarn build
    - run: yarn jest
    - run: yarn test:inte
      env:
        JWT_SECRET: MIIBO...
    - run: |
        JWT_SECRET=MIIBO...
        echo The JWT secret is:$JWT_SECRET
        yarn test:e2e

What did I miss to make it work?

>Solution :

I believe it should be:

    - run: |
        export JWT_SECRET=MIIBO...
        echo The JWT secret is:$JWT_SECRET
        yarn test:e2e

or

    - run: |
        echo The JWT secret is:$JWT_SECRET
        yarn test:e2e
      env:
        JWT_SECRET: MIIBO...