Run from the terminal:
go mod init example.com/m/v2
Copy the generated file before you build the go program in the Dockerfile:
FROM golang:alpine
WORKDIR /myapp
COPY welcome.go .
COPY go.mod .
RUN go build -o welcome .
ENTRYPOINT ["./welcome"]
Make the generation of go.mod as part of the docker container:
FROM golang:latest AS builder
WORKDIR /myapp
COPY welcome.go .
RUN go mod init example.com/m/v2
RUN go build -o welcome .
FROM scratch
WORKDIR /myapp
COPY --from=builder /myapp/welcome .
ENTRYPOINT ["./welcome"]
