Add a Dockerfile

Dockerfile

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+FROM golang:1.24-alpine AS builder
+RUN apk add --no-cache git
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY src/ ./src/
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o git-pages ./src
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates git
+RUN addgroup -g 1000 -S appuser && \
+    adduser -u 1000 -S appuser -G appuser
+
+WORKDIR /app
+COPY --from=builder /app/git-pages .
+
+USER appuser
+EXPOSE 3333
+CMD ["./git-pages"]

docker-compose.yml

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+  git-pages:
+    build:
+      context: https://codeberg.org/whitequark/git-pages.git
+      dockerfile: ./Dockerfile
+    restart: always
+    user: "1000:1000"
+    volumes:
+      - ./git-pages/config.toml:/app/config.toml
+      - ./git-pages/data:/data