added docker

Author: FarhanPAA

.dockerignore

@@ -0,0 +1,6 @@
+__pycache__/
+*.pyc
+.venv/
+.env
+.git/
+.github/

.github/workflows/ci-cd.yml

@@ -0,0 +1,66 @@
+name: CI-CD
+
+on:
+  pull_request:
+  push:
+    branches: [ main ]
+
+jobs:
+  ci:
+    name: Lint + Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: "pip"
+
+      - name: Install deps
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Ruff (lint)
+        run: ruff check .
+
+      - name: Pytest (tests)
+        run: pytest -q
+
+  docker:
+    name: Docker Build (+ Push on main)
+    runs-on: ubuntu-latest
+    needs: ci
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Login only needed when pushing (main branch)
+      - name: Login to GHCR
+        if: github.event_name == 'push'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build (PR) or Build+Push (main)
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name == 'push' }}
+          tags: |
+            ghcr.io/${{ github.repository }}:latest
+            ghcr.io/${{ github.repository }}:${{ github.sha }}

.github/workflows/ci.yml

@@ -0,0 +1,10 @@
+FROM python:3.14-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["python", "-c", "from src.app import add; print(add(2,3))"]

Dockerfile

@@ -1,2 +1,2 @@
 def add(a: int, b: int) -> int:
-    return a + b
+    return a + b