Golang Github Private Repo docker-compose

.env.example

GITHUB_USER=user
GITHUB_TOKEN=github_pat_abcdefghijklmnopqrstuvwxyz0123456789

docker-compose.yaml

version: "3.8"

services:
  rove-api:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        DOCKER_BUILDKIT: 1
        GITHUB_USER: ${GITHUB_USER}
        GITHUB_TOKEN: ${GITHUB_TOKEN}
    image: my-app
    container_name: my-app
    hostname: my-app

Dockerfile

##
## Build
##

FROM golang:1.21-bullseye AS build

WORKDIR /app

# stage the golang initialization files and variables
COPY . ./

ARG GITHUB_USER
ARG GITHUB_TOKEN

# install git
RUN apt-get install -y git

# RUN source .env && \
RUN go env -w GOPRIVATE=github.com/username/private_repo && \
    git config --global url."https://${GITHUB_USER}:${GITHUB_TOKEN}@github.com".insteadOf "https://github.com" && \
    go mod download

RUN rm -rf .env .git .gitconfig

RUN --mount=type=cache,target=/app/.cache \
    GOCACHE=/app/.cache \
    go build -ldflags "-s -w" -v -o hello-env main.go

##
## Deploy
##

FROM gcr.io/distroless/base-debian11

WORKDIR /home/nonroot

COPY --from=builder --chown=nonroot:nonroot /app/my-app /usr/sbin/my-app

USER nonroot:nonroot

ENTRYPOINT ["/usr/sbin/my-app"]

main.go

package main

import (
    priv "github.com/username/private_repo"
)

func main() {
    priv.DoStuff()
}