Feature/lab11

.github/pull_request_template.md

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+## Goal
+Finish Lab 1 by setting up SSH commit signing and a pull request template.
+
+## Changes
+- Enabled SSH-based commit signing
+- Added lab report and screenshots
+- Introduced a standard PR template
+
+## Testing
+- [ ] Project builds and runs successfully
+- [ ] Commits are signed and verified
+- [ ] Documentation is complete and updated

.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:
+      - name: Print basic info
+        run: |
+          echo "Hello from GitHub Actions!"
+          date
+          echo "Actor: $GITHUB_ACTOR"
+          echo "Ref: $GITHUB_REF"
+          echo "SHA: $GITHUB_SHA"
+          uname -a
+
+      - name: System information
+        run: |
+          echo "=== SYSTEM INFO ==="
+          echo "--- OS / Kernel ---"
+          uname -a
+          cat /etc/os-release || true
+
+          echo "--- CPU ---"
+          nproc
+          lscpu || true
+          cat /proc/cpuinfo | head -n 30 || true
+
+          echo "--- Memory ---"
+          free -h || true
+          cat /proc/meminfo | head -n 20 || true
+
+          echo "--- Disk ---"
+          df -h
+          lsblk || true
+
+          echo "--- GitHub runner env ---"
+          echo "RUNNER_OS=$RUNNER_OS"
+          echo "RUNNER_ARCH=$RUNNER_ARCH"
+          echo "RUNNER_NAME=$RUNNER_NAME"
+          echo "RUNNER_TEMP=$RUNNER_TEMP"
+          echo "GITHUB_WORKFLOW=$GITHUB_WORKFLOW"
+          echo "GITHUB_RUN_ID=$GITHUB_RUN_ID"
+          echo "GITHUB_RUN_NUMBER=$GITHUB_RUN_NUMBER"

.gitignore

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+### Python template
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+.idea/
+

demo.txt

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+base

labs/lab11/app/Dockerfile

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+FROM golang:1.22
+WORKDIR /app
+COPY go.mod main.go ./
+RUN go build -o app .
+CMD ["/app/app"]

labs/lab11/app/Dockerfile.traditional

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+FROM golang:1.22 AS builder
+WORKDIR /src
+COPY go.mod main.go ./
+ENV CGO_ENABLED=0
+RUN go build -o /out/app .
+
+FROM scratch
+COPY --from=builder /out/app /app
+ENTRYPOINT ["/app"]

labs/lab11/app/default.nix

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+let
+  pkgs = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/nixos-25.05.tar.gz") {};
+in
+pkgs.buildGoModule {
+  pname = "app";
+  version = "1.0.0";
+  src = pkgs.lib.cleanSource ./.;
+  vendorHash = null;
+}

labs/lab11/app/docker.nix

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+let
+  pkgs = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/nixos-25.05.tar.gz") {};
+  app = pkgs.buildGoModule {
+    pname = "app";
+    version = "1.0.0";
+    src = pkgs.lib.cleanSource ./.;
+    vendorHash = null;
+  };
+in
+pkgs.dockerTools.buildLayeredImage {
+  name = "nix-app";
+  tag = "latest";
+  contents = [ app ];
+  config = {
+    Cmd = [ "${app}/bin/app" ];
+  };
+}

labs/lab11/app/flake.nix

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+{
+  description = "Lab 11 reproducible Go app";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+      app = pkgs.buildGoModule {
+        pname = "app";
+        version = "1.0.0";
+        src = pkgs.lib.cleanSource ./.;
+        vendorHash = null;
+      };
+      image = pkgs.dockerTools.buildLayeredImage {
+        name = "nix-app-flake";
+        tag = "latest";
+        contents = [ app ];
+        config = {
+          Cmd = [ "${app}/bin/app" ];
+        };
+      };
+    in {
+      packages.${system}.default = app;
+      dockerImages.${system}.default = image;
+      devShells.${system}.default = pkgs.mkShell {
+        buildInputs = [
+          pkgs.go
+          pkgs.gopls
+        ];
+      };
+    };
+}

labs/lab11/app/go.mod

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+module app
+
+go 1.22