sabryr/nris-training-sum-from-file repository overview

⁠NRIS container training

• This is a container image created to be used during NRIS training on containers
• Link to tutorial page⁠
• Link to training events page⁠

⁠Available scripts

The container has two main python applications and bash wrappers for them to demonstrate how containers access to host file system.

1. sum-from-file
2. access-list

⁠1. sum-from-file

• This is the default application

• This will print some details about the container and the home directory as it see it

• If one or more files (absolute paths) are provided as arguments, the script will check if they are accessible from the container

• If accessible, look for numbers, line by line. Numbers found are summed and the total is printed as output.

• example

$: docker run --name sum-file sabryr/nris-training-sum-from-file file-with-numbers.txt

Operating System is Linux #17~24.04.2-Ubuntu SMP PREEMPT_DYNAMIC Mon Jan 20 22:48:29 UTC 2 release:6.11.0-17-generic
Python Version is   3.13.2 (main, Feb 25 2025, 05:25:21) [GCC 12.2.0]
Home directory is   /user1
Current working directory  /user1  
Files to check (provided as arguments): 
       1) '/data/number-list.txt' found /data.  
           #  Sum of numbers found=288.0 | skipped lines=0 

⁠2. access-list

This application prints the mounts points as the container see them

$: docker exec <container_id_or_name> file-with-numbers.txt

⁠With outputfile

$: docker run --name sum-file sabryr/nris-training-sum-from-file file-with-numbers.txt --output out-file.txt