ci: add ci files (#11)

* ci: add ci files

* fix: add goose image build

.github/workflows/pytests.yml

@@ -0,0 +1,40 @@
+name: Pytests
+
+on:
+  pull_request:
+  push:
+
+permissions:
+  contents: write
+  checks: write
+  pull-requests: write
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: true
+      matrix:
+        python-version: ["3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          enable-cache: true
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install all dependencies
+        run: uv sync --frozen --all-extras --all-groups
+
+      - name: Build goose image
+        run: |
+          uv tool install --with-editable . .
+          cubbi image build goose
+
+      - name: Tests
+        run: |
+          uv run --frozen -m pytest -v