使用 pg 替换 sql

Dockerfile.backend

@@ -8,16 +8,11 @@ FROM ${GO_BUILDER_IMAGE} AS builder
 
 ARG GOPROXY
 ARG GOSUMDB
-ARG ALPINE_MIRROR
 ENV GOPROXY=${GOPROXY}
 ENV GOSUMDB=${GOSUMDB}
 
 WORKDIR /app
 
-# SQLite 驱动依赖 CGO，构建阶段需要 C 编译工具 / SQLite driver needs CGO and a C toolchain
-RUN sed -i "s|https://dl-cdn.alpinelinux.org/alpine|${ALPINE_MIRROR}|g; s|http://dl-cdn.alpinelinux.org/alpine|${ALPINE_MIRROR}|g" /etc/apk/repositories \
-	&& apk --no-cache add build-base
-
 # 复制 Go 依赖文件 / Copy Go dependency files
 COPY backend/go.mod backend/go.sum ./
 RUN go mod download
@@ -26,7 +21,7 @@ COPY backend ./backend
 WORKDIR /app/backend
 
 # 构建 Go 二进制文件 / Build Go binary
-RUN CGO_ENABLED=1 GOOS=linux go build -ldflags="-linkmode external -extldflags '-static'" -o /server ./cmd/server
+RUN CGO_ENABLED=0 GOOS=linux go build -o /server ./cmd/server
 
 # 最终运行镜像 / Runtime image
 FROM ${BACKEND_RUNTIME_IMAGE}