[优化] 更新Dockerfile，优化构建过程

openflare_server/Dockerfile

@@ -1,38 +1,38 @@
+# syntax=docker/dockerfile:1.7
 ARG VERSION=dev
-
-FROM node:20 AS builder
-
+FROM node:20 AS web-builder
 ARG VERSION
-
 WORKDIR /build
-COPY ./web/package.json ./
-COPY ./web/pnpm-lock.yaml ./
-RUN corepack enable && pnpm install --frozen-lockfile
+RUN corepack enable
+COPY ./web/package.json ./web/pnpm-lock.yaml ./
+RUN --mount=type=cache,id=pnpm-store,target=/root/.local/share/pnpm/store \
+    pnpm install --frozen-lockfile
 COPY ./web ./
-RUN NEXT_PUBLIC_APP_VERSION="$VERSION" pnpm build
-
-FROM golang:1.25 AS builder2
+RUN --mount=type=cache,id=next-cache,target=/build/.next/cache \
+    NEXT_PUBLIC_APP_VERSION="$VERSION" pnpm build
 
+FROM golang:1.25 AS go-builder
 ARG VERSION
-
 ENV GO111MODULE=on \
     CGO_ENABLED=0 \
     GOOS=linux
-
 WORKDIR /build
+COPY go.mod go.sum ./
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
 COPY . .
-COPY --from=builder /build/build ./web/build
-RUN go mod download
-RUN go build -trimpath -ldflags "-s -w -X 'openflare/common.Version=$VERSION'" -o openflare
+COPY --from=web-builder /build/build ./web/build
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    go build -trimpath \
+      -ldflags "-s -w -X 'openflare/common.Version=$VERSION'" \
+      -o openflare
 
-FROM alpine
-
-RUN apk update \
-    && apk upgrade \
-    && apk add --no-cache ca-certificates tzdata \
+FROM alpine:latest
+RUN apk add --no-cache ca-certificates tzdata \
     && update-ca-certificates 2>/dev/null || true
 ENV PORT=3000
-COPY --from=builder2 /build/openflare /
+COPY --from=go-builder /build/openflare /openflare
 EXPOSE 3000
 WORKDIR /data
 ENTRYPOINT ["/openflare"]