Running `go` From a Docker Container

 I followed instructions I found here: https://hub.docker.com/_/golang

% cat Dockerfile

FROM golang:1.21
WORKDIR /usr/src/app
# pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change
COPY go.mod go.sum ./
RUN go mod download && go mod verify
COPY . .
RUN go build -v -o /usr/local/bin/app ./...
CMD ["app"]

You can use it like this ...

% cat hello.go

package main

import ("fmt")

func main() {

  fmt.Println("Hello World!")

}

% docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp golang:1.21 go build /usr/src/myapp/hello.go

% docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp golang:1.21 /usr/src/myapp/hello

Hello World!