ERROR: failed to build: failed to solve: process "/bin/sh -c apk add --no-cache ca-certificates" did not complete successfully: exit code: 1

[ivoidcat]

=> ERROR [stage-1 2/3] RUN apk add --no-cache ca-certificates 0.3s
=> CACHED [builder 1/7] FROM docker.io/library/golang:1.25-alpine 0.0s
=> ERROR [builder 2/7] RUN apk add --no-cache gcc musl-dev 0.3s

[stage-1 2/3] RUN apk add --no-cache ca-certificates:
0.224 fetch https://dl-cdn.alpinelinux.org/alpine/v3.19/main/aarch64/APKINDEX.tar.gz
0.224 fetch https://dl-cdn.alpinelinux.org/alpine/v3.19/community/aarch64/APKINDEX.tar.gz
0.224 WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.19/main: could not connect to server (check repositories file)
0.224 WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.19/community: could not connect to server (check repositories file)
0.224 ERROR: unable to select packages:
0.224 ca-certificates (no such package):
0.224 required by: world[ca-certificates]

---

---

[builder 2/7] RUN apk add --no-cache gcc musl-dev:
0.222 WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.24/main/aarch64/APKINDEX.tar.gz: Connection refused
0.222 WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.24/community/aarch64/APKINDEX.tar.gz: Connection refused
0.222 ERROR: unable to select packages:
0.222 gcc (no such package):
0.222 required by: world[gcc]
0.222 musl-dev (no such package):
0.222 required by: world[musl-dev]

---

Dockerfile:15

13 | FROM alpine:3.19
14 |
15 | >>> RUN apk add --no-cache ca-certificates
16 |
17 | COPY --from=builder /JoyCodeProxy /usr/local/bin/JoyCodeProxy

ERROR: failed to build: failed to solve: process "/bin/sh -c apk add --no-cache ca-certificates" did not complete successfully: exit code: 1

[CC11001100]

先谢谢你把这个反馈出来 👍 不过这个其实不是代码 / Dockerfile 的 bug，我看了一下你的日志，根因是另一回事。

真正的错误其实在报错更上面这几行：

WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.19/main: could not connect to server
WARNING: fetching https://dl-cdn.alpinelinux.org/alpine/v3.24/community: Connection refused

也就是说，构建的时候 apk 压根连不上 Alpine 的官方源 dl-cdn.alpinelinux.org。因为拉不到包索引，它就把 ca-certificates、gcc、musl-dev 全都报成了 "no such package" —— 这个提示其实有点误导人。两个不同版本的 Alpine（3.19 和 3.24）同时连不上，基本可以确定是网络层面的问题（国内访问这个 CDN 经常连不上或者很慢，多半就是它）。

我刚顺手把 Dockerfile 改了一下，加了个 ALPINE_MIRROR 构建参数，你可以直接把源指到国内镜像再 build：

docker build \
  --build-arg ALPINE_MIRROR=https://mirrors.aliyun.com/alpine \
  -t joycode-proxy .

改动在这：53b8d94
默认还是官方源，行为和以前完全一样，所以不影响其他人。

镜像源任选一个（路径写到 /alpine 为止）：

• 阿里云：https://mirrors.aliyun.com/alpine
• 清华 TUNA：https://mirrors.tuna.tsinghua.edu.cn/alpine
• 中科大 USTC：https://mirrors.ustc.edu.cn/alpine

如果换了镜像源还是不行，也可以试这两条路：

1. 给 Docker 配代理（docker build --network=host + 系统代理，或 ~/.docker/config.json）。
2. 干脆别用 Docker，直接源码编译（README 里有：go build -o joycode_proxy_bin ./cmd/JoyCodeProxy/），编译出来是单文件二进制，部署也挺省事。

方便的话用上面那条 --build-arg 命令重新 build 一下，把结果告诉我？要是还有问题我接着帮你看。