With azure pipelines and poetry, is there any way to avoid sourcing ~/.poetry/env in every script?

I currently use the script below to build my package and publish it to a private Azure Artifacts feed. In every script, I have to run the line source $HOME/.poetry/env or it cannot find the poetry command.

Is there a way to remove this repetition?

Full script:

trigger:
- master

pool:
  vmImage: 'ubuntu-latest'

strategy:
  matrix:
    Python38:
      python.version: '3.8'

steps:
- task: UsePythonVersion@0
  inputs:
    versionSpec: '$(python.version)'
  displayName: 'Use Python $(python.version)'

- script: |
    sudo apt-get install texlive texlive-latex-extra latexmk
    python -m pip install --upgrade pip
    python -m pip install keyring artifacts-keyring
    curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python
    source $HOME/.poetry/env
    poetry install
  displayName: 'Install package and tools'

- script: |
    source $HOME/.poetry/env
    poetry run python -m isort -rc
    poetry run python -m black -l 79 .
  displayName: 'Format code'

- script: |
    source $HOME/.poetry/env
    poetry run python -m flake8
    poetry run python -m bandit -r ini=.bandit .
    poetry run python -m mypy --config-file=mypy.ini src/preppy/ tests/ docs/
  displayName: 'Lint code'

- script: |
    source $HOME/.poetry/env
    poetry run python -m pytest tests/
  displayName: 'Test code'

- script: |
    source $HOME/.poetry/env
    poetry run make clean
    poetry run make latexpdf
  workingDirectory: docs
  displayName: 'Build documentation'

- script: |
    source $HOME/.poetry/env
    poetry build
  displayName: 'Create package'

- script: |
    source $HOME/.poetry/env
    poetry config repositories.azure https://pkgs.dev.azure.com/MY_USERNAME/preppy/_packaging/builds/pypi/upload
    poetry publish -r azure --username=$(pipelines-token) --password=$(pipelines-token)
    exit 0
  displayName: 'Publish artifact'