Source: https://github.com/haeramkeem/multidockers/tree/main/py-timelog
docker build -t $IMAGE_TAG .LOG_FILE_PATH: Path of the file which container writes the current time. Default is /var/log/time.log.LOG_INTERVAL: Time interval for log writing. Default is 1.Official docker image can be found in here
| FROM python:3.8-slim | |
| # Set environments | |
| ENV PYTHONDONTWRITEBYTECODE=1 | |
| ENV PYTHONUNBUFFERED=1 | |
| ENV LOG_FILE_PATH=/var/log/time.log | |
| ENV LOG_INTERVAL=1 | |
| # Set working dir | |
| WORKDIR /etc/py-timelog | |
| COPY . . | |
| # Set entrypoint | |
| ENTRYPOINT [ "python3", "main.py" ] |
| import os | |
| from datetime import datetime | |
| from time import sleep | |
| def log_to_file(content): | |
| with open(os.environ.get("LOG_FILE_PATH"), 'a') as file_obj: | |
| file_obj.write(content + '\n') | |
| def main(): | |
| while True: | |
| log_to_file("Current time: " + datetime.now().astimezone().isoformat()) | |
| sleep(int(os.environ.get("LOG_INTERVAL"))) | |
| if __name__ == "__main__": | |
| main() |