feat(ci): add github action - by qwen3.6-30b-a3b

Author: nold

.github/workflows/build.yml

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+name: build
+
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
+  schedule:
+    - cron: '0 0 * * 0'  # weekly
+  workflow_dispatch:
+
+env:
+  REGISTRY_DOCKER: docker.io
+  REGISTRY_GHCR: ghcr.io
+  IMAGE_NAME_DOCKER: nold360/borgserver
+  IMAGE_NAME_GHCR: ghcr.io/nold360/borgserver
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - base: debian:trixie-slim
+            tags: |
+              trixie
+              latest
+            platforms: linux/amd64,linux/arm64
+          - base: debian:bookworm-slim
+            tags: |
+              bookworm
+            platforms: linux/amd64,linux/arm64
+          - base: debian:unstable-slim
+            tags: |
+              unstable
+            platforms: linux/amd64,linux/arm64
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.REGISTRY_DOCKER }}/${{ env.IMAGE_NAME_DOCKER }}
+            ${{ env.REGISTRY_GHCR }}/${{ env.IMAGE_NAME_GHCR }}
+          tags: ${{ matrix.tags }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Dry-run build
+        if: github.event_name == 'pull_request'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: ${{ matrix.platforms }}
+          push: false
+          tags: ${{ steps.meta.outputs.tags }}
+          build-args: |
+            BASE_IMAGE=${{ matrix.base }}
+
+      - name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GH_PUSH_TOKEN }}
+
+      - name: Build and push
+        if: github.event_name != 'pull_request'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: ${{ matrix.platforms }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            BASE_IMAGE=${{ matrix.base }}
+
+ 

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is a Docker image for running a BorgBackup server. It builds a Debian-based container with openssh-daemon that accepts SSH key auth for borg clients. Each client SSH key in `/sshkeys/clients/` maps to a separate borg repository.
+
+## Key Files
+
+- `Dockerfile` - Builds the image from `debian:<version>-slim`, installs `borgbackup` + `openssh-server`
+- `data/run.sh` - Entrypoint script: adjusts PUID/PGID, generates SSH host keys, imports client keys into `authorized_keys` with restricted `borg serve` commands, starts sshd
+- `data/sshd_config` - Hardened SSH config: pubkey-only, no forwarding, no TTY, SFTP disabled
+- `.woodpecker.yml` - CI pipeline using Woodpecker CI with Docker Buildx for multi-platform builds
+- `docker-compose.yml` - Example compose file
+
+## Architecture
+
+The entrypoint (`run.sh`) works as follows:
+1. Adjusts `borg` user/group IDs to match host PUID/PGID
+2. Validates `/backup` and `/sshkeys` volumes exist and that at least one client key is present (sshd won't start otherwise)
+3. Generates SSH host keys (ed25519, rsa) in `/sshkeys/host/` if missing
+4. Iterates over files in `/sshkeys/clients/`, creating an `authorized_keys` entry per client with:
+   - `restrict` flag + `command=` wrapping a `borg serve --restrict-to-path` command
+   - If `BORG_ADMIN` is set, that client gets unrestricted access to all repos
+   - If `BORG_APPEND_ONLY=yes`, non-admin clients get `--append-only`
+5. Starts `/usr/sbin/sshd -D -e`
+
+## Environment Variables
+
+| Variable | Default | Description |
+|---|---|---|
+| `BORG_APPEND_ONLY` | `no` | Restrict clients to append-only mode |
+| `BORG_ADMIN` | unset | Client key name that gets full access to all repos |
+| `BORG_SERVE_ARGS` | unset | Extra args passed to `borg serve` |
+| `PUID` | `1000` | User ID for `borg` user |
+| `PGID` | `1000` | Group ID for `borg` group |
+
+## CI/CD
+
+Built via Woodpecker CI (`.woodpecker.yml`). Matrix builds target:
+- `unstable-slim` → `linux/arm64/v8` tag `unstable`
+
+Builds publish to Docker Hub (`nold360/borgserver`) and GHCR (`ghcr.io/nold360/borgserver`).
+
+## Building Locally
+
+```bash
+docker build -t borgserver:dev .
+docker build --build-arg BASE_IMAGE=debian:trixie-slim -t borgserver:trixie .
+```