Feature/lab4

.github/pull_request_template.md

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+## Goal
+What does this PR accomplish
+
+## Changes
+- Item 1
+- Item 2
+
+## Testing
+How was it verified
+
+## Checklist
+- [ ] Clear, descriptive PR title
+- [ ] Documentation updated if needed
+- [ ] No secrets or large temporary files committed

.github/workflows/lab3.yml

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+name: Lab 3 CI
+
+on:
+  push:
+    branches: [ "feature/lab3" ]
+  workflow_dispatch:
+
+jobs:
+  basic-info:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Basic info
+        run: |
+          echo "Triggered by: ${{ github.event_name }}"
+          echo "Branch: ${{ github.ref }}"
+          echo "Commit: ${{ github.sha }}"
+          date
+          pwd
+          ls -la
+
+  system-info:
+    runs-on: ubuntu-latest
+    steps:
+      - name: System info
+        run: |
+          uname -a
+          nproc
+          free -h
+          df -h

labs/labs/submisstion3.md

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+
+# Lab 3 — CI/CD (GitHub Actions)
+
+Platform: GitHub Actions
+
+## Task 1 — First workflow + push trigger
+Run link: https://github.com/vizitei-dmitri/DevOps-Intro/actions/runs/22235770166
+Key concepts:
+- Workflow file: `.github/workflows/lab3.yml`
+- Jobs: `basic-info`, `system-info`
+- Runner: `ubuntu-latest`
+- Trigger: push to `feature/lab3`
+
+What triggered it:
+- A commit pushed to `feature/lab3`
+
+## Workflow file (`.github/workflows/lab3.yml`)
+```yaml
+name: Lab 3 CI
+
+on:
+  push:
+    branches: [ "feature/lab3" ]
+  workflow_dispatch:
+
+jobs:
+  basic-info:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Basic info
+        run: |
+          echo "Triggered by: ${{ github.event_name }}"
+          echo "Branch: ${{ github.ref }}"
+          echo "Commit: ${{ github.sha }}"
+          date
+          pwd
+          ls -la
+
+  system-info:
+    runs-on: ubuntu-latest
+    steps:
+      - name: System info
+        run: |
+          uname -a
+          nproc
+          free -h
+          df -h
+
+## Task 2 — Manual trigger + system information
+Manual run link: 
+https://github.com/vizitei-dmitri/DevOps-Intro/actions/runs/22236576033
+System info log snippet:
+```text
+uname -a
+  nproc
+  free -h
+  df -h
+  shell: /usr/bin/bash -e {0}
+Linux runnervmwffz4 6.11.0-1018-azure #18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
+4
+               total        used        free      shared  buff/cache   available
+Mem:            15Gi       914Mi        13Gi        35Mi       1.8Gi        14Gi
+Swap:          3.0Gi          0B       3.0Gi
+Filesystem      Size  Used Avail Use% Mounted on
+/dev/root       145G   53G   92G  37% /
+tmpfs           7.9G   84K  7.9G   1% /dev/shm
+tmpfs           3.2G 1008K  3.2G   1% /run
+tmpfs           5.0M     0  5.0M   0% /run/lock
+efivarfs        128M   29K  128M   1% /sys/firmware/efi/efivars
+/dev/sda16      881M   62M  758M   8% /boot
+/dev/sda15      105M  6.2M   99M   6% /boot/efi
+tmpfs           1.6G   12K  1.6G   1% /run/user/1001
+
+

labs/labs/test.txt

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+Test content