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Merge pull request #17 Add GitHub Actions workflows for backend AWS ECR deployment
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‎.github/workflows/build-and-push-backend.yml‎

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---
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# ABOUTME: Builds and pushes truecover-backend Docker image to AWS ECR.
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# ABOUTME: Triggers on push to main/master branches and version tags.
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name: Build and Push Backend to ECR
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"on":
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push:
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branches:
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- main
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- master
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tags:
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- 'v*'
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paths:
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- 'truecover-backend/**'
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- '.github/workflows/build-and-push-backend.yml'
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env:
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AWS_REGION: ${{ vars.AWS_REGION || 'eu-central-1' }}
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ECR_REPOSITORY: onaio/truecover-backend
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permissions:
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id-token: write
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contents: read
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jobs:
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build-and-push:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Configure AWS credentials (OIDC)
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uses: aws-actions/configure-aws-credentials@v4
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with:
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role-to-assume: ${{ secrets.AWS_ROLE_ARN }}
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aws-region: ${{ env.AWS_REGION }}
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- name: Login to Amazon ECR
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id: login-ecr
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uses: aws-actions/amazon-ecr-login@v2
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Extract metadata for Docker
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id: meta
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uses: docker/metadata-action@v5
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with:
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images: |
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${{ steps.login-ecr.outputs.registry }}/${{ env.ECR_REPOSITORY }}
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tags: |
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type=sha,prefix=,format=short
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type=ref,event=branch
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type=semver,pattern={{version}}
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type=semver,pattern={{major}}.{{minor}}
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type=raw,value=latest,enable=${{
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startsWith(github.ref, 'refs/tags/v') }}
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- name: Build and push Docker image
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uses: docker/build-push-action@v5
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with:
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context: ./truecover-backend
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file: ./truecover-backend/Dockerfile
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push: true
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tags: ${{ steps.meta.outputs.tags }}
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labels: ${{ steps.meta.outputs.labels }}
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cache-from: type=gha
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cache-to: type=gha,mode=max
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provenance: true
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sbom: true
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- name: Output image details
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env:
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REGISTRY: ${{ steps.login-ecr.outputs.registry }}
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TAGS: ${{ steps.meta.outputs.tags }}
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run: |
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echo "## Backend image pushed to ECR" >> $GITHUB_STEP_SUMMARY
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echo "" >> $GITHUB_STEP_SUMMARY
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echo "**Registry:** $REGISTRY" >> $GITHUB_STEP_SUMMARY
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echo "**Repository:** $ECR_REPOSITORY" >> $GITHUB_STEP_SUMMARY
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echo "" >> $GITHUB_STEP_SUMMARY
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echo "**Tags:**" >> $GITHUB_STEP_SUMMARY
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echo '```' >> $GITHUB_STEP_SUMMARY
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echo "$TAGS" >> $GITHUB_STEP_SUMMARY
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echo '```' >> $GITHUB_STEP_SUMMARY

‎.github/workflows/pr-check-backend.yml‎

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---
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# ABOUTME: GitHub Actions workflow for validating backend pull requests.
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# ABOUTME: Runs tests and validates Docker build without pushing.
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name: PR Check Backend
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"on":
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pull_request:
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branches:
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- main
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- master
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paths:
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- 'truecover-backend/**'
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- '.github/workflows/pr-check-backend.yml'
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jobs:
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test:
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runs-on: ubuntu-latest
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defaults:
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run:
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working-directory: ./truecover-backend
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Install uv
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uses: astral-sh/setup-uv@v4
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- name: Set up Python
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run: uv python install 3.12
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- name: Install dependencies
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run: uv sync --frozen --extra dev
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- name: Run linting
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continue-on-error: true
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run: |
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uv run black --check .
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uv run flake8
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- name: Run tests
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run: uv run pytest
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docker-build:
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runs-on: ubuntu-latest
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needs: test
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Build Docker image (validation only)
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uses: docker/build-push-action@v5
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with:
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context: ./truecover-backend
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file: ./truecover-backend/Dockerfile
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push: false
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tags: truecover-backend:pr-${{ github.event.pull_request.number }}
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cache-from: type=gha
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cache-to: type=gha,mode=max
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- name: Build validation complete
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env:
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PR_NUMBER: ${{ github.event.pull_request.number }}
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run: |
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echo "## Docker Build Validation" >> $GITHUB_STEP_SUMMARY
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echo "" >> $GITHUB_STEP_SUMMARY
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echo "Backend Docker image built successfully for PR #$PR_NUMBER" \
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>> $GITHUB_STEP_SUMMARY
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echo "" >> $GITHUB_STEP_SUMMARY
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echo "**Note:** Image was not pushed to registry" \
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>> $GITHUB_STEP_SUMMARY

‎truecover-backend/Dockerfile‎

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# ABOUTME: Multi-stage Docker build for Flask backend using uv.
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# ABOUTME: Produces an optimized Python image running gunicorn.
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# Build stage
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FROM python:3.12-slim AS build
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# Install uv
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COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
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WORKDIR /app
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# Copy dependency files
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COPY pyproject.toml uv.lock ./
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# Install dependencies
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RUN uv sync --frozen --no-dev
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# Copy source files
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COPY . .
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# Production stage
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FROM python:3.12-slim
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# Install runtime dependencies for geospatial libraries
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libpq5 \
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libgdal36 \
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libgeos-c1t64 \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /app
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# Copy virtual environment from build stage
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COPY --from=build /app/.venv /app/.venv
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# Copy application code
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COPY --from=build /app .
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# Set environment variables
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ENV PATH="/app/.venv/bin:$PATH"
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ENV PYTHONUNBUFFERED=1
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EXPOSE 5000
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# Run with gunicorn
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CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:5000", "app:app"]

‎truecover-backend/tests/test_placeholder.py‎

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def test_placeholder():
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"""Placeholder test to ensure pytest finds at least one test."""
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assert 1 + 1 == 2

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