Why does my Go app fail with "no such file or directory" inside a Docker container?-CodePudding

I have a Go 1.18 app which runs without issues in my WSL2 Ubuntu, but fails to run in a Docker container with the error message exec /app: no such file or directory.

My Dockerfile (slightly adapted from another Go 1.12 app that works without issues) is:

FROM golang:1.18-alpine AS build

WORKDIR /app

COPY go.mod ./
COPY go.sum ./
RUN go mod download

COPY source/*.go ./

RUN go build -o /app

FROM gcr.io/distroless/static-debian11

COPY --from=build /app /app

USER nonroot:nonroot

CMD ["/app"]

Building it shows no errors. I tried adding GOOS=linux and GOARCH=amd64 and building with --platform linux/amd64 but it makes no difference (and should not be necessary I think?). I switched from Distroless to Debian, same issue.

The file /app exists (11 mb, 755). file /app gives this output:

app: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-musl-x86_64.so.1, Go BuildID=UsV_orwX-S3Rwh16P1VH/6u2iHufDhnUYUkHBp0rE/2xn48wuW047ZRbQ7qPIy/ihQgooFxjsMgMzYGE-8h, not stripped

I can't figure out where I'm going wrong. What is the issue here?

CodePudding user response：

Seems to be caused by using go-ping/ping. Switching the build image to golang:1.18 (not Alpine) and the final image to gcr.io/distroless/base-debian11 fixes the issue.