add GitHub action

Author: simonspa

.github/workflows/ci.yml

@@ -0,0 +1,121 @@
+# SPDX-FileCopyrightText: 2025 DESY and the Constellation authors
+# SPDX-License-Identifier: CC0-1.0
+
+name: Constellation GitHub CI Pipeline
+
+on:
+  push:
+    branches: [ '**' ]
+  pull_request:
+
+jobs:
+  lint-mypy:
+    name: Lint (mypy)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/python:3.11
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python virtualenv
+        run: |
+          python3 -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip setuptools
+          pip install --no-build-isolation -e .[dev]
+
+      - name: Run mypy
+        run: |
+          source venv/bin/activate
+          mypy src/
+
+  format-black:
+    name: Format Check (black)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/python:3.11
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python virtualenv
+        run: |
+          python3 -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip setuptools
+          pip install --no-build-isolation -e .[dev]
+
+      - name: Check black formatting
+        run: |
+          source venv/bin/activate
+          black --check src/
+
+  format-isort:
+    name: Format (isort)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/python:3.11
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python virtualenv
+        run: |
+          python3 -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip setuptools
+          pip install --no-build-isolation -e .[dev]
+
+      - name: Check isort formatting
+        run: |
+          source venv/bin/activate
+          isort --check .
+
+  format-flake8:
+    name: Format (flake8)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/python:3.11
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python virtualenv
+        run: |
+          python3 -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip setuptools
+          pip install --no-build-isolation -e .[dev]
+
+      - name: Run flake8
+        run: |
+          source venv/bin/activate
+          flake8 src/
+
+  format-reuse:
+    name: Format (reuse)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/fsfe/reuse:latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run reuse lint
+        run: reuse lint
+
+  format-codespell:
+    name: Format (codespell)
+    runs-on: ubuntu-latest
+    container:
+      image: tollerort.desy.de/hub.docker.com/python:3.11
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python virtualenv
+        run: |
+          python3 -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip setuptools
+          pip install --no-build-isolation -e .[dev]
+
+      - name: Run codespell
+        run: |
+          source venv/bin/activate
+          codespell