README.md

docker build \
  --build-arg http_proxy=http://docker.for.win.localhost:8888/ \
  --build-arg https_proxy=http://docker.for.win.localhost:8888/ \
  -t lab .

cat config/lab.hcl

"core" = {
   "host" = "https://git.company.local/"
   "token" = "ycMdJezxXePJJAzfsyEm"
}

"tls" = { 
  "skip_verify" = true
}

docker run -it -v $(pwd)/config:/root/.config lab:latest
2019/12/17 14:18:31 main.go:161: Get https://git.company.local//api/v4/user: x509: certificate signed by unknown authority 

Dockerfile

FROM golang:1.13

WORKDIR /go/src/app
COPY . .

RUN make install
RUN ls

CMD ["/go/src/app/lab"]