standard_init_linux.go:207: exec user process caused "no such file or directory" while trying to statically link c libs

Question

I am unable to dockerize and use a utility written in c in go.

I have run this program locally without docker and it works

I tried using gccgo like so go build -compiler gccgo -gccgoflags -static-libgo but I get the same error

The preamble that calls the C functions looks like so:

/*
#cgo amd64 x86 LDFLAGS: -L. -lsomelib -lsomeotherlib
#include <stdio.h>
#include <stdlib.h>
#include "someheader.h"
*/

My docker file looks like so:

FROM golang:1.12 AS build

WORKDIR /go/src/app
COPY . .

ENV GOOS=linux
ENV GOARCH=amd64
ENV CGO_LDFLAGS_ALLOW='-linkmode external -extldflags -static-libgcc'

COPY packageFolder $GOPATH/src/packageFolder
COPY mainPackage $GOPATH/src/mainPackage

RUN cd packageFolder
RUN go get -d -v ./...
RUN CGO_ENABLED=1 go build --ldflags '-linkmode external -extldflags -static-libgcc' -o $GOPATH/pkg/linux_amd64/packageFolder.a -x
RUN cd ../packageFolder
RUN go get -d -v ./...
RUN CGO_ENABLED=1 go build --ldflags '-linkmode external -extldflags -static-libgcc' -o $GOPATH/pkg/linux_amd64/mainPackage.a -x
RUN cd ..
RUN go get -d -v ./...
RUN go build -a -x

FROM ourPackager:latest AS packager
WORKDIR /
COPY ./resources ./resources/
RUN appman-packager create-package "package.tar.gz" ./resources

FROM scratch AS runtime
COPY --from=build /go/src/app/app /
COPY --from=packager "/package.tar.gz" ./resources/
EXPOSE 8080/tcp
ENTRYPOINT ["/app"]

I keep running into standard_init_linux.go:207: exec user process caused "no such file or directory" when I do a docker run

What am I missing?

Answer 1

I was able to fix it with Mark's suggestion. Using a Golang image for runtime exposed the actual problem of the shared object file not being packaged. So I copy it to /usr/lib/x86_64-linux-gnu in my runtime. I ended up using ubuntu:18.04 instead of the Golang image at runtime

FROM golang:1.12 AS build

WORKDIR /go/src/app
COPY . .

ENV GOOS=linux
ENV GOARCH=amd64
ENV CGO_ENABLED=1
COPY acrcloud $GOPATH/src/packageFolder
COPY musicrec $GOPATH/src/mainPackage

RUN cd packageFolder
RUN go get -d -v ./...
RUN go build -o $GOPATH/pkg/linux_amd64/packageFolder -x
RUN cd ../mainPackage
RUN go get -d -v ./...
RUN go build -o $GOPATH/pkg/linux_amd64/mainPackage -x
RUN cd ..
RUN go get -d -v ./...
RUN go build -a -x

FROM ourPackager:latest AS packager
WORKDIR /
COPY ./resources ./resources/
RUN appman-packager create-package "package.tar.gz" ./resources

FROM ubuntu:18.04 AS runtime
COPY --from=build /go/src/app/app /
COPY --from=build /go/src/app/myExternalTool.so /usr/lib/x86_64-linux-gnu
COPY --from=packager "/package.tar.gz" ./resources/
EXPOSE 8080/tcp
ENTRYPOINT ["/app"]