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1.4.2.1 Docker Tips

1. Customize Your Own Docker Images: docker commit​

For example, customize your own Ubuntu:22.04 by creating a new file named myversion.txt in the image's /etc directory to record the version number.

Customization:

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Commit the modified Docker image (ID: 4ce35d7ed9b9):

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Testing:

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Refer to the video for more details.

2. Upload to Local Repository and Pull from HPC Node​

Upload to local repository: 10.120.24.15:5000/jhinno, and pull it down from an HPC node to run, then read the myversion.txt inside.

TAG:

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PUSH:

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Pull down and run on HPC node (cpu01), read the myversion.txt inside the container:

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Refer to the video for more details.

3. Interact with Current Working Directory Data in Docker Container​

Example:

  1. Map the current path: /hpc/home/simonyjhe/docker-data to /opt/mydata in the container.

  2. Read the container's version and save it to /hpc/home/simonyjhe/docker-data/output.txt.

Preparation: The directory contains only one executable file, get-version.sh, which reads the version number of the previously customized Docker image and saves it to /opt/mydata/output.txt.

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Submit to run on cpu01 node:

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Parameter explanation:

--rm: Do not retain the container, delete upon exit.

-v /hpc/home/simonyjhe/docker-data:/opt/mydata: Map the working directory /hpc/home/simonyjhe/docker-data to /opt/mydata in the Docker container, enabling data interaction.

4. Display GUI from Docker Container Running on HPC Node​

To display GUI from a Docker container running on an HPC node, specify two parameters:

--net="host"

-e DISPLAY="$DISPLAY"

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