Initial docker image

.woodpecker/docker-buildx.yml

@@ -0,0 +1,21 @@
+when:
+  branch: main
+  event:
+    - push
+
+variables:
+  - &repo scm.gruezi.net/buckbanzai/crossposter
+
+steps:
+  publish:
+    image: docker.io/woodpeckerci/plugin-docker-buildx:latest
+    settings:
+      repo: *repo
+      registry: scm.gruezi.net
+      tags: latest
+      username: woodpecker_bot
+      password:
+        from_secret: FORGEJO_PACKAGES_API_TOKEN
+      platforms: linux/amd64,linux/arm64
+    when:
+      event: push

.woodpecker/inactive/docker-buildx.yml

@@ -1,33 +0,0 @@
-when:
-  branch: main
-  event: [push, pull_request]
-
-variables:
-  - &file Dockerfile
-  - &repo scm.gruezi.net/${CI_REPO}
-
-steps:
-  dryrun:
-    image: woodpeckerci/plugin-docker-buildx
-    settings:
-      dockerfile: *file
-      platforms: linux/arm/v7,linux/arm64/v8,linux/amd64,linux/ppc64le
-      dry_run: true
-      repo: *repo
-      tags: latest
-    when:
-      event: pull_request
-
-  publish:
-    image: woodpeckerci/plugin-docker-buildx
-    settings:
-      dockerfile: *file
-      platforms: linux/arm/v7,linux/arm64/v8,linux/amd64,linux/ppc64le
-      repo: *repo
-      registry: scm.gruezi.net
-      tags: latest
-      username: ${CI_REPO_OWNER}
-      password:
-        from_secret: FORGEJO_API_TOKEN
-    when:
-      event: push

Dockerfile

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+# An example using multi-stage image builds to create a final image without uv.
+
+# First, build the application in the `/app` directory.
+# See `Dockerfile` for details.
+FROM ghcr.io/astral-sh/uv:python3.12-bookworm-slim AS builder
+ENV UV_COMPILE_BYTECODE=1 UV_LINK_MODE=copy
+
+# Disable Python downloads, because we want to use the system interpreter
+# across both images. If using a managed Python version, it needs to be
+# copied from the build image into the final image; see `standalone.Dockerfile`
+# for an example.
+ENV UV_PYTHON_DOWNLOADS=0
+
+WORKDIR /app
+RUN --mount=type=cache,target=/root/.cache/uv \
+    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    uv sync --locked --no-install-project --no-dev
+COPY . /app
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv sync --locked --no-dev
+
+
+# Then, use a final image without uv
+FROM python:3.12-slim-bookworm
+# It is important to use the image that matches the builder, as the path to the
+# Python executable must be the same, e.g., using `python:3.11-slim-bookworm`
+# will fail.
+
+# Copy the application from the builder
+COPY --from=builder --chown=app:app /app /app
+
+# Place executables in the environment at the front of the path
+ENV PATH="/app/.venv/bin:$PATH"
+
+CMD ["python", "scl.py"]