问没有获得env变量的Bitbucket管道

EN

image: node:14

pipelines:
  branches:
    master:
      - parallel:
        - step:
            name: Build and Test
            caches:
              - node
            script:
              - rm -rf package-lock.json
              - npm install
              - npm rebuild node-sass
              - CI=false npm run build:prod
            artifacts:
              - build/**
        - step:
            name: Security Scan
            script:
              # See more security tools at https://bitbucket.org/product/features/pipelines/integrations?&category=security
              - pipe: atlassian/git-secrets-scan:0.5.1
      - step:
          name: Deploy to Production
          deployment: Production
          trigger: manual
          clone:
            enabled: false
          script:
            # sync your files to S3
            - pipe: atlassian/aws-s3-deploy:1.1.0
              variables:
                AWS_ACCESS_KEY_ID: $AWS_ACCESS_KEY_ID
                AWS_SECRET_ACCESS_KEY: $AWS_SECRET_ACCESS_KEY
                AWS_DEFAULT_REGION: $AWS_DEFAULT_REGION
                S3_BUCKET: $S3_BUCKET
                LOCAL_PATH: 'build'

"build": "env-cmd -f .env.prod react-scripts build",

REACT_APP_BASE_URL=http://myurl/api

import { useEffect } from "react";
import axios from 'axios'

const App = () => {

    const getData = async () => {
        console.log("base url: ", process.env.REACT_APP_BASE_URL); // it is undefined
        const response = await axios.get(`${process.env.REACT_APP_BASE_URL}/api/users`);
        console.log("response: ", response)
    }

    useEffect(() => {
        getData();
    }, [])

    return <h1>My Component</h1>
};
}