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feat: Add Dockerfile and CI build step#3

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tutunak merged 3 commits intomasterfrom
feat/docker-ci
May 29, 2025
Merged

feat: Add Dockerfile and CI build step#3
tutunak merged 3 commits intomasterfrom
feat/docker-ci

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@tutunak tutunak commented May 29, 2025

Adds a Dockerfile to containerize the sbg.py application. The Dockerfile uses a Python 3.11-slim base image, installs git and Python dependencies from requirements.txt.

The GitHub Actions CI workflow has been updated to include a new step that builds the Docker image using the created Dockerfile. This ensures the Docker image can be built successfully as part of the CI pipeline.

Summary by CodeRabbit

  • New Features
    • Introduced a Dockerfile for containerized deployment, enabling the application to run in a Docker environment.
  • Chores
    • Updated CI workflow to build a Docker image during continuous integration.

Adds a Dockerfile to containerize the sbg.py application.
The Dockerfile uses a Python 3.11-slim base image, installs git
and Python dependencies from requirements.txt.

The GitHub Actions CI workflow has been updated to include a new
step that builds the Docker image using the created Dockerfile.
This ensures the Docker image can be built successfully as part
of the CI pipeline.
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📥 Commits

Reviewing files that changed from the base of the PR and between 2143256 and 8447719.

📒 Files selected for processing (2)
  • .github/workflows/ci.yml (1 hunks)
  • Dockerfile (1 hunks)

Walkthrough

A Dockerfile was added to containerize the application using Python 3.11 slim, installing necessary dependencies and setting up the entrypoint. The CI workflow was updated to include a new step that builds this Docker image during continuous integration, tagging it appropriately but not pushing it to a registry.

Changes

File(s) Change Summary
.github/workflows/ci.yml Added a step to build a Docker image using docker/build-push-action@v5 in the CI workflow.
Dockerfile Introduced a Dockerfile to containerize the app, installing git, dependencies, and configuring entrypoint.

Sequence Diagram(s)

sequenceDiagram
    participant Developer
    participant GitHub Actions
    participant Docker Build
    participant Test Runner

    Developer->>GitHub Actions: Push code / open PR
    GitHub Actions->>Docker Build: Build Docker image (Dockerfile)
    Docker Build-->>GitHub Actions: Image sbg-gitlab-cloner:latest built
    GitHub Actions->>Test Runner: Run tests
Loading

Poem

In a Docker shell, my code now dwells,
With Python and git, it surely excels.
The CI now builds, with a hop and a dash,
Tagging my image in a digital stash.
🐇 Containerized dreams, in pipelines they stream!


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Actionable comments posted: 1

🧹 Nitpick comments (5)
Dockerfile (3)

2-2: Pin base image variant for reproducibility.

Consider specifying the Debian variant (e.g., python:3.11-slim-bullseye) rather than the floating slim alias to avoid unexpected OS-level changes when the slim tag is updated.


14-14: Upgrade pip before installing dependencies.

Ensure you’re using the latest pip resolver and security fixes:

-RUN pip install --no-cache-dir -r requirements.txt
+RUN python -m pip install --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt

23-23: Use explicit entrypoint invocation.

Rely on the Python interpreter instead of executable permissions and shebang. This avoids failures if sbg.py lacks a proper shebang:

-ENTRYPOINT ["./sbg.py"]
+ENTRYPOINT ["python", "/app/sbg.py"]
.github/workflows/ci.yml (2)

26-31: Avoid rebuilding the Docker image on every Python matrix run.

The Build Docker image step currently runs for each Python version in the matrix, which is redundant. You can restrict it to a single version (e.g., 3.11) or hoist it into its own job:

-    - name: Build Docker image
-      uses: docker/build-push-action@v5
-      with:
-        context: .
-        push: false
-        tags: sbg-gitlab-cloner:latest
+    - name: Build Docker image (only on Python 3.11)
+      if: matrix.python-version == '3.11'
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        push: false
+        tags: sbg-gitlab-cloner:latest

27-27: Pin action versions for reproducibility.

Instead of @v5, reference a specific minor version (e.g., @v5.4.0) or a commit SHA to avoid unexpected breaks when the action is updated upstream.

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📥 Commits

Reviewing files that changed from the base of the PR and between f5607b8 and 2143256.

📒 Files selected for processing (2)
  • .github/workflows/ci.yml (1 hunks)
  • Dockerfile (1 hunks)

…e is built only once.

I introduced a new 'docker_build' job that depends on the successful completion of the 'build' job (test matrix). I then moved the Docker build step from the 'build' job to this new 'docker_build' job. This addresses your feedback to prevent building the Docker image for each Python version in the test matrix.
Updates the Dockerfile to improve the apt-get command used for
installing git.

The changes include:
- Combining 'apt-get update' and 'apt-get install' into a single RUN layer.
- Adding the '--no-install-recommends' flag to 'apt-get install'
  to avoid installing unnecessary packages.
- Cleaning up apt cache and lists ('rm -rf /var/lib/apt/lists/*')
  after installation.

These optimizations help reduce the final Docker image size.
@tutunak tutunak merged commit 80bc3d2 into master May 29, 2025
8 checks passed
@tutunak tutunak deleted the feat/docker-ci branch May 29, 2025 06:43
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