example1.md

Here’s how you can track the number of times the volume has been accessed using a Python program inside a Docker container based on python:3.7-alpine.

---

Step 1: Create a Docker Volume

Run the following command to create the volume: refer code volume_creation.sh [click me...]

./volume_creation.sh

---

Step 2: Create a Python Script (app.py)

This script will create a file inside the volume (/data_folder/access_count.txt) and increment the count each time the script runs. see the code of app.py: Link [click me]

Step 3: Create a Dockerfile

This Dockerfile sets up a Python 3.7 Alpine container with our script. dockerfile contant: Link [click me]

Step 4: Build the Docker Image

see the code of run build docker image : Link [click me] Run the following command to build the image:

./build_script.sh

---

Step 5: Run the Container with Mounted Volume

see the contant of run.sh: Link [click me]

Run the container and mount the volume:

./run.sh

Each time you run the container, the script inside will increment and display the access count.

---

Step 6: Verify the Volume Data

To manually check the access count, you can start a temporary container and inspect the file:

docker run --rm --init \
  --mount type=volume,source=python_data_volume,target=/data_folder \
  python-volume-access-tracter cat /data_folder/access_count.txt

also see the content of .Dockerignore file

• Link: [click me]

---

Expected Output

When you first run the container:

Volume accessed for the first time.

On subsequent runs:

Volume has been accessed 2 times.
Volume has been accessed 3 times.
...

---

Conclusion

• The script ensures that the access count persists across container runs using Docker volumes.
• Python 3.7 Alpine is used for a lightweight environment.
• The track_access.py script automatically updates and logs access counts in /data_folder/access_count.txt.