DEV-3896 feat(hello_devops) add subject and tests for into exercise to teach student how to push in gitea repo

sh/tests/hello_devops_test.sh

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+#!/usr/bin/env bash
+
+# Unofficial Bash Strict Mode
+set -euo pipefail
+IFS='
+'
+
+FILENAME="student/hello_devops.sh"
+
+# True if FILE exists and is a regular file
+if [ -f ${FILENAME} ]; then
+    # FILE exists and it's not empty
+    if [ -s ${FILENAME} ]; then
+        submitted=$(bash $FILENAME)
+        expected=$(bash solutions/hello_devops.sh)
+        diff <(echo "$submitted") <(echo "$expected") | cat -t
+    else
+        echo "The file exist but is empty"
+        exit 1
+    fi
+else
+    echo "File does not exist"
+    exit 1
+fi

sh/tests/solutions/hello_devops.sh

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+#!/usr/bin/env bash
+
+echo "Hello $USERNAME!"

subjects/devops/hello_devops/README.md

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+## Introduction
+
+### Instructions
+
+#### 1- get-ready
+
+Create in your [Gitea](<https://((DOMAIN))/git>) account the repository named `((ROOT))`.
+
+This repository will be the folder where all the exercises must be uploaded.
+
+Once created, clone that repository on your desktop.
+
+To do so, open a Unix shell (e.g. Git Bash on Windows), you are going to type commands in it.
+
+First, tell Git to remember your password (like a web browser would):
+
+```
+git config --global credential.helper store
+```
+
+If your username was `01-user` this is the command that will need to be used:
+
+```
+git clone https://((DOMAIN))/git/01-user/((ROOT)).git
+```
+
+This command needs to be adapted with **your own username**.
+
+#### 2- set
+
+Once the repository is created, use you code editor to write your first shell script called `hello_devops.sh`
+
+When executed, this script must print `Hello 01-user!`, where `01-user` is your username.
+
+##### Usage
+
+If the username is `01-user`:
+
+```console
+$ bash hello_devops.sh
+Hello 01-user!
+$
+```
+
+#### 3- go-say-hello
+
+After that the `hello_devops.sh` is executing correctly, it needs to be uploaded to the repository with the following commands:
+
+1. `git add hello_devops.sh`
+2. `git commit -m "My very first commit"`
+3. `git push`
+
+Once these steps are applied, the file can now be submitted for grading on the platform by clicking on the "RUN INTRODUCTION TEST" button.
+
+This action will run the tests on your submitted `hello_devops.sh` file.
+
+### Recommendation
+
+Videos designed to give **hints** are assigned. It is strongly suggested to watch them as you go.
+
+There are subtitles available in French and English.