Docker: COPY failed: file not found in build context or excluded by .dockerignore: stat go.mod

Question

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What I am trying to do: To build a docker image from inside Go\/node routine<\/strong><\/i>

FROM golang:1.18

WORKDIR /usr/src/app

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

COPY . .
RUN go build -v -o /usr/local/bin/app ./...

EXPOSE 3333


CMD ["app"]

Answer 1

Path to the root of the project updated. This solved the problem. Root cause may have been archive.TarWithOptions , not docker-sdk itself.

    tar, err := archive.TarWithOptions("./", &archive.TarOptions{})
    if err != nil {
        panic(err)
    }