Feature/lab3

.github/pull_request_template.md

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+## Goal
+[Provide a clear the goal of PR]
+
+## Changes
+- [List the key changes or modifications made in the code.]
+- [Highlight any significant refactoring or architectural decisions.]
+
+## Testing
+[Provide clear instructions on how to test the changes locally.]
+
+### Checklist:
+- [ ] Clear title and description
+- [ ] Documentation/README updated if needed
+- [ ] No secrets or large temporary files

.github/workflows/lab3-ci.yml

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+name: Lab 3 CI Pipeline
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  explore-github-actions:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Run a one-line script
+        run: echo "Hello, World! This job is running on a ${{ runner.os }} server powered by GitHub Actions!"
+
+      - name: Debug Information
+        run: |
+          echo "This job is running on: ${{ runner.os }}"
+          echo "The GitHub Actor who triggered it is: ${{ github.actor }}"
+          echo "The GitHub SHA of the commit is: ${{ github.sha }}"
+
+      - name: Gather System Information
+        run: |
+          echo "--- OS Information ---"
+          uname -a
+          echo "--- CPU Information ---"
+          lscpu
+          echo "--- Memory Information ---"
+          free -h
+          echo "--- Disk Usage ---"
+          df -h

labs/submission3.md

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+## Task 1
+
+**Link to a successful run:**  
+https://github.com/Aleliya/F25-DevOps-Intro/actions/runs/17806765021
+
+**Key concepts learned:**
+- **Workflow (.yml file):** This is an automated process that you describe in the YAML file. It is located in the folder`.github/workflows/`.
+- **Triggers (on: [push]):** Events that trigger workflow. In my case, any push code is sent to the repository.
+- **Jobs:** A set of steps that are performed on the same runner. I have one job it is `explore-github-actions`.
+- **Steps:** Individual commands or actions that are performed sequentially within a job. The steps can run scripts `run:` or use predefined actions `uses:`.
+- **Runner:** A server provided by GitHub, on which jobs are performed. In my case, this is `ubuntu-latest`.
+
+**What caused the run to trigger?**
+The launch was triggered by a `push` event, namely by sending a commit with a new workflow file `lab3-ci.yml` to the 'feature/lab3` branch.
+
+## Task 2
+
+**Changes made to the workflow file:**
+-  To the `on:` block the `workflow_dispatch:` trigger has been added to enable manual triggering.
+-  Added a new step `Gather System Information` for task 2.
+- This step uses Linux commands (`uname -a`, `lscpu`, `free -h`, `df -h`) to collect detailed information about the runner's system.
+
+**Collected information about the system (logs from "Gather System Information"):**
+```
+--- OS Information ---
+Linux runnervmf4ws1 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
+--- CPU Information ---
+Architecture:                         x86_64
+CPU op-mode(s):                       32-bit, 64-bit
+Address sizes:                        48 bits physical, 48 bits virtual
+Byte Order:                           Little Endian
+CPU(s):                               4
+On-line CPU(s) list:                  0-3
+Vendor ID:                            AuthenticAMD
+Model name:                           AMD EPYC 7763 64-Core Processor
+CPU family:                           25
+Model:                                1
+Thread(s) per core:                   2
+Core(s) per socket:                   2
+Socket(s):                            1
+Stepping:                             1
+BogoMIPS:                             4890.85
+Flags:                                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid aperfmperf tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves user_shstk clzero xsaveerptr rdpru arat npt nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload umip vaes vpclmulqdq rdpid fsrm
+Virtualization:                       AMD-V
+Hypervisor vendor:                    Microsoft
+Virtualization type:                  full
+L1d cache:                            64 KiB (2 instances)
+L1i cache:                            64 KiB (2 instances)
+L2 cache:                             1 MiB (2 instances)
+L3 cache:                             32 MiB (1 instance)
+NUMA node(s):                         1
+NUMA node0 CPU(s):                    0-3
+Vulnerability Gather data sampling:   Not affected
+Vulnerability Itlb multihit:          Not affected
+Vulnerability L1tf:                   Not affected
+Vulnerability Mds:                    Not affected
+Vulnerability Meltdown:               Not affected
+Vulnerability Mmio stale data:        Not affected
+Vulnerability Reg file data sampling: Not affected
+Vulnerability Retbleed:               Not affected
+Vulnerability Spec rstack overflow:   Vulnerable: Safe RET, no microcode
+Vulnerability Spec store bypass:      Vulnerable
+Vulnerability Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitization
+Vulnerability Spectre v2:             Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
+Vulnerability Srbds:                  Not affected
+Vulnerability Tsx async abort:        Not affected
+--- Memory Information ---
+               total        used        free      shared  buff/cache   available
+Mem:            15Gi       791Mi        13Gi        39Mi       1.5Gi        14Gi
+Swap:          4.0Gi          0B       4.0Gi
+--- Disk Usage ---
+Filesystem      Size  Used Avail Use% Mounted on
+/dev/root        72G   46G   27G  64% /
+tmpfs           7.9G   84K  7.9G   1% /dev/shm
+tmpfs           3.2G  1.1M  3.2G   1% /run
+tmpfs           5.0M     0  5.0M   0% /run/lock
+/dev/sdb16      881M   60M  760M   8% /boot
+/dev/sdb15      105M  6.2M   99M   6% /boot/efi
+/dev/sda1        74G  4.1G   66G   6% /mnt
+tmpfs           1.6G   12K  1.6G   1% /run/user/1001
+```