Sample bitbucket pipeline for Android

bitbucket-pipelines.yml

image: androidsdk/android-30

pipelines:
  branches:
    master:
      - step:
          name: Create keystore and API key
          script:
            # create the keystore file and the google play api key file
            - mkdir keys
            - echo $KEYSTORE_FILE_BASE64 | base64 --decode > keys/$KEYSTORE_FILE
            - echo $GOOGLE_PLAY_API_KEY_BASE64 | base64 --decode > keys/$GOOGLE_PLAY_API_KEY
          artifacts:
            - keys/**
      - parallel:
          - step:
              name: Run unit tests
              caches:
                - gradle
              script:
                - export GRADLE_OPTS='-XX:+UseG1GC -XX:MaxGCPauseMillis=1000 -Dorg.gradle.jvmargs="-Xmx2048m -XX:MaxPermSize=1024m -XX:ReservedCodeCacheSize=440m -XX:+UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8" -Dorg.gradle.parallel=false -Dorg.gradle.daemon=false -Dorg.gradle.configureondemand=true'
                - "./gradlew -PKEYSTORE_FILE=../keys/$KEYSTORE_FILE
                             -PKEYSTORE_PASSWORD=$KEYSTORE_PASSWORD
                             -PKEY_ALIAS=$KEY_ALIAS
                             -PKEY_PASSWORD=$KEY_PASSWORD
                             -PGOOGLE_PLAY_API_KEY=../keys/$GOOGLE_PLAY_API_KEY
                             test"
              artifacts:
                - app/build/outputs/**
                - app/build/reports/**
          - step:
              name: Build & deploy
              caches:
                - gradle
              script:
                # publish the aab file to the internal testing channel
                - export GRADLE_OPTS='-XX:+UseG1GC -XX:MaxGCPauseMillis=1000 -Dorg.gradle.jvmargs="-Xmx2048m -XX:MaxPermSize=1024m -XX:ReservedCodeCacheSize=440m -XX:+UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8" -Dorg.gradle.parallel=false -Dorg.gradle.daemon=false -Dorg.gradle.configureondemand=true'
                - "./gradlew -PKEYSTORE_FILE=../keys/$KEYSTORE_FILE
                             -PKEYSTORE_PASSWORD=$KEYSTORE_PASSWORD
                             -PKEY_ALIAS=$KEY_ALIAS
                             -PKEY_PASSWORD=$KEY_PASSWORD
                             -PGOOGLE_PLAY_API_KEY=../keys/$GOOGLE_PLAY_API_KEY
                             -PBUILD_NUMBER=$BITBUCKET_BUILD_NUMBER
                             clean :app:publishFreeReleaseBundle :app:publishProReleaseBundle"
              artifacts:
                - app/build/outputs/
      - parallel:
          - step:
              name: Promote free version
              caches:
                - gradle
              trigger: manual
              script:
                # promote the app from the internal testing channel to the production channel
                - export GRADLE_OPTS='-XX:+UseG1GC -XX:MaxGCPauseMillis=1000 -Dorg.gradle.jvmargs="-Xmx2048m -XX:MaxPermSize=1024m -XX:ReservedCodeCacheSize=440m -XX:+UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8" -Dorg.gradle.parallel=false -Dorg.gradle.daemon=false -Dorg.gradle.configureondemand=true'
                - "./gradlew -PKEYSTORE_FILE=../keys/$KEYSTORE_FILE
                             -PKEYSTORE_PASSWORD=$KEYSTORE_PASSWORD
                             -PKEY_ALIAS=$KEY_ALIAS
                             -PKEY_PASSWORD=$KEY_PASSWORD
                              -PGOOGLE_PLAY_API_KEY=../keys/$GOOGLE_PLAY_API_KEY
                              -PBUILD_NUMBER=$BITBUCKET_BUILD_NUMBER
                              promoteFreeReleaseArtifact --from-track internal --promote-track production --release-status completed"
          - step:
              name: Promote pro version
              caches:
                - gradle
              trigger: manual
              script:
                # promote the app from the internal testing channel to the production channel
                - export GRADLE_OPTS='-XX:+UseG1GC -XX:MaxGCPauseMillis=1000 -Dorg.gradle.jvmargs="-Xmx2048m -XX:MaxPermSize=1024m -XX:ReservedCodeCacheSize=440m -XX:+UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8" -Dorg.gradle.parallel=false -Dorg.gradle.daemon=false -Dorg.gradle.configureondemand=true'
                - "./gradlew -PKEYSTORE_FILE=../keys/$KEYSTORE_FILE
                             -PKEYSTORE_PASSWORD=$KEYSTORE_PASSWORD
                             -PKEY_ALIAS=$KEY_ALIAS
                             -PKEY_PASSWORD=$KEY_PASSWORD
                              -PGOOGLE_PLAY_API_KEY=../keys/$GOOGLE_PLAY_API_KEY
                              -PBUILD_NUMBER=$BITBUCKET_BUILD_NUMBER
                              promoteProReleaseArtifact --from-track internal --promote-track production --release-status inProgress --user-fraction .5"

I get an error

Could not get unknown property 'APP_KEYSTORE_FILE' for SigningConfig_Decorated{name=release, storeFile=null, storePassword=null, keyAlias=null, keyPassword=null, storeType=pkcs12, v1SigningEnabled=true, v2SigningEnabled=true, enableV1Signing=null, enableV2Signing=null, enableV3Signing=null, enableV4Signing=null} of type com.android.build.gradle.internal.dsl.SigningConfig.

This is the SO question
https://stackoverflow.com/q/68218878/12204620

Thanks