Use '.python-version' for builds

.github/workflows/build-container.yaml

@@ -22,11 +22,17 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set build args
+        run: |
+          PYTHON_VERSION=$(cat .python-version)
+          echo "PYTHON_VERSION=$PYTHON_VERSION" >> $GITHUB_ENV
       - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v6
         with:
           push: true
+          build-args: |
+            PYTHON_VERSION=${{ env.PYTHON_VERSION }}
           tags: |
             ghcr.io/${{ github.repository }}:${{ github.ref_name }}
             ghcr.io/${{ github.repository }}:latest

.github/workflows/release.yaml

@@ -14,8 +14,6 @@ jobs:
 
       - name: Setup Python
         uses: actions/setup-python@v5
-        with:
-          python-version: "3.9"
 
       - name: Install uv
         uses: astral-sh/setup-uv@v6

Dockerfile

@@ -1,4 +1,6 @@
-FROM ghcr.io/astral-sh/uv:python3.13-bookworm-slim AS builder
+ARG PYTHON_VERSION="3.13"
+
+FROM ghcr.io/astral-sh/uv:python${PYTHON_VERSION}-bookworm-slim AS builder
 ENV UV_COMPILE_BYTECODE=1 UV_LINK_MODE=copy
 ENV UV_PYTHON_DOWNLOADS=0
 WORKDIR /app
@@ -11,7 +13,7 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     uv sync --locked --no-dev
 
 
-FROM python:3.13-slim-bookworm
+FROM python:${PYTHON_VERSION}-slim-bookworm
 COPY --from=builder --chown=app:app /app /app
 ENV PATH="/app/.venv/bin:$PATH"
 EXPOSE 80/tcp

Taskfile.yaml

@@ -14,7 +14,7 @@ tasks:
   docker:build:
     desc: Build the container using Docker
     cmds:
-      - docker build . -t smsbot:latest
+      - docker build . --build-arg PYTHON_VERSION=$(cat .python-version) -t smsbot:latest
 
   smsbot:run:
     desc: Run the SMSBot