Example Dockerfile for a Go (golang) project. Uses the official Debian image with the latest version of Go

Dockerfile

# Start from a Debian image with the latest version of Go installed
# and a workspace (GOPATH) configured at /go.
FROM golang

# Copy the local package files to the container's workspace
ADD . /go/src/github.com/username/program

# bake in some environment variables?
# ENV SOME_ENV ""

# Set the working directory to avoid relative paths after this
WORKDIR /go/src/github.com/username/program

# Fetch the dependencies
RUN go get .

# build the binary to run later
RUN go build

# Run the command by default when the container starts
ENTRYPOINT /go/bin/program

# Document that the service listens on port 3000
EXPOSE 3000