Lab3 submission

.gitmodules

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+[submodule "lab3"]
+	path = lab3
+	url = https://github.com/Gh0stCasper/lab3

lab1-intro/submission1.md

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+Task 1: Benefits of Signed Commits
+
+Authentication of the author
+
+Guaranteed code integrity
+
+Protection against commit spoofing
+
+Compliance with security requirements
+
+Task 2: Comparison of Merge Strategies
+
+Strategy	          Pros	                                     Cons
+Standard Merge	          Preserves change history	             Creates "noise" in history
+Squash Merge	          Clean commit history	                     Loses change context
+Rebase	                  Linear history	                     Rewrites history (dangerous!)
+
+
+Why Standard Merge is Preferred:
+
+Transparency of change history
+Safety (doesn’t overwrite commits)
+Convenience for troubleshooting

lab3-submission/submission3.md

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+# Lab: GitHub Actions CI/CD
+
+## Task 1: Creating Your First GitHub Actions Pipeline
+
+### Steps:
+1. Created a workflow file: `.github/workflows/github-actions-demo.yml`
+2. Used the YAML configuration from the guide:
+    ```yaml
+    name: GitHub Actions Demo
+    run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
+    on: [push]
+    jobs:
+      Explore-GitHub-Actions:
+        runs-on: ubuntu-latest
+        steps:
+          - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+          - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
+          - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
+          - name: Check out repository code
+            uses: actions/checkout@v4
+          - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
+          - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+          - name: List files in the repository
+            run: |
+              ls ${{ github.workspace }}
+          - run: echo "🍏 This job's status is ${{ job.status }}."
+    ```
+
+### Observations:
+- Workflow automatically triggered after push
+- All steps executed successfully
+- Output:
+🎉 The job was automatically triggered by a push event.
+🐧 This job is now running on a Linux server hosted by GitHub!
+🔎 The name of your branch is refs/heads/main and your repository is Gh0stCasper/lab3.
+💡 The Gh0stCasper/lab3 repository has been cloned to the runner.
+🖥️ The workflow is now ready to test your code on the runner.
+lab3
+README.md
+🍏 This job's status is success.
+
+text
+
+## Task 2: Manual Trigger and System Information Collection
+
+### Changes to Workflow:
+1. Added manual trigger:
+  ```yaml
+  on: 
+    push:
+    workflow_dispatch:  # Manual trigger
+  ```
+
+2. Added system information collection:
+  ```yaml
+  - name: Collect system information
+    run: |
+      echo "### 🖥️ System Info ###"
+      echo "OS: $(uname -a)"
+      echo "CPU: $(lscpu | grep 'Model name' | sed 's/Model name://')"
+      echo "Memory: $(free -h | grep Mem | awk '{print $2}')"
+      echo "Disk: $(df -h / | grep -v Filesystem)"
+  ```
+
+### Full Workflow File:
+```yaml
+name: GitHub Actions Demo
+run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
+on: 
+push:
+workflow_dispatch:  # Manual trigger
+jobs:
+Explore-GitHub-Actions:
+  runs-on: ubuntu-latest
+  steps:
+    - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+    - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
+    - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
+    - name: Check out repository code
+      uses: actions/checkout@v4
+    - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
+    - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+    - name: List files in the repository
+      run: |
+        ls ${{ github.workspace }}
+    - run: echo "🍏 This job's status is ${{ job.status }}."
+    - name: Collect system information
+      run: |
+        echo "### 🖥️ System Info ###"
+        echo "OS: $(uname -a)"
+        echo "CPU: $(lscpu | grep 'Model name' | sed 's/Model name://')"
+        echo "Memory: $(free -h | grep Mem | awk '{print $2}')"
+        echo "Disk: $(df -h / | grep -v Filesystem)"
+Manual Execution Results:
+How to run:
+
+Go to Actions → GitHub Actions Demo
+
+Click "Run workflow"
+
+System information output:
+
+text
+### 🖥️ System Info ###
+OS: Linux fv-az1276-708 6.11.0-1015-azure #15~24.04.1-Ubuntu SMP Thu May  1 02:52:08 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
+CPU: AMD EPYC 7763 64-Core Processor
+Memory: 15Gi
+Disk: /dev/root        72G   48G   25G  66% /
+System analysis:
+
+OS: Ubuntu 24.04 (kernel 6.11.0-1015-azure)
+
+CPU: AMD EPYC 7763 (64 cores)
+
+Memory: 15 GB RAM
+
+Disk: 72 GB total (25 GB free)
+
+Conclusions
+GitHub Actions simplifies CI/CD automation
+
+Manual triggers (workflow_dispatch) are useful for debugging
+
+System information helps analyze execution environment:
+
+Modern runners use powerful AMD EPYC processors
+
+Standard disk size: 72-84 GB
+
+Memory size: 7-15 GB depending on load
+
+GitHub Actions significantly speeds up development processes