Describe the bug

1. content in dagu/base.yaml:
   env:
   - QUANT_SIGNAL_DIR: "/work/quant-signal"

2. content in dags/health-check.yaml:
   working_dir: ${QUANT_SIGNAL_DIR}
   steps:
   - command: printenv QUANT_SIGNAL_DIR PYTHON_BIN

3. content in /work/quant-signal/.env:
   PYTHON_BIN=/usr/local/bin/python

When I run the DAG pipeline, it's supposed to print "/work/quant-signal" and "/usr/local/bin/python". And It works when using dagu_2.6.7_linux_arm64.tar.gz. However, when using dagu_2.6.7_linux_amd64.tar.gz, it only prints "/work/quant-signal", which means it didn't parse the .env file in the working_dir.

To Reproduce

Steps to reproduce the behavior:

1. Use dagu_2.6.7_linux_amd64.tar.gz
2. setup DIR environment variable in base.yaml
3. setup .env file in DIR folder
4. setup working_dir and printenv in dags/workflow.yaml
5. Run the workflow
6. See error of printenv

Environment

• Dagu version: dagu_2.6.7_linux_amd64
• OS: Debian 12.5
• Installation method: download binary

Screenshots