添加Docker多阶段构建和GitHub Actions自动打包推送

Dockerfile

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+FROM node:20-alpine AS frontend-builder
+
+WORKDIR /app/frontend
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+COPY frontend/package.json frontend/pnpm-lock.yaml ./
+
+RUN pnpm install --frozen-lockfile
+
+COPY frontend/ ./
+
+RUN pnpm build
+
+FROM golang:1.21-alpine AS backend-builder
+
+WORKDIR /app
+
+RUN apk add --no-cache git
+
+COPY backend/go.mod backend/go.sum ./
+
+RUN go mod download
+
+COPY backend/ ./
+
+RUN mkdir -p embedded/dist
+
+COPY --from=frontend-builder /app/frontend/dist ./embedded/dist/
+
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main ./cmd/main.go
+
+FROM alpine:latest
+
+RUN apk --no-cache add ca-certificates tzdata
+
+RUN addgroup -g 1001 -S appgroup && \
+    adduser -u 1001 -S appuser -G appgroup
+
+WORKDIR /app
+
+COPY --from=backend-builder /app/main .
+COPY --from=backend-builder /app/config.yaml .
+
+RUN mkdir -p /app/uploads && \
+    chown -R appuser:appgroup /app
+
+USER appuser
+
+EXPOSE 8080
+
+VOLUME ["/app/uploads"]
+
+CMD ["./main"]