Dockerfile

# ---------------------------------------------------------------------
#  The first stage container, for building the application
# ---------------------------------------------------------------------
FROM golang:1.12.1-stretch as builder

COPY . /app

# Add the keys
ARG bitbucket_id
ENV bitbucket_id=$bitbucket_id
ARG bitbucket_token
ENV bitbucket_token=$bitbucket_token

WORKDIR /app/cmd/webapp

RUN git config \
    --global \
    url."https://${bitbucket_id}:${bitbucket_token}@privatebitbucket.com/".insteadOf \
    "https://privatebitbucket.com/"

RUN GIT_TERMINAL_PROMPT=1 \
    GOARCH=amd64 \
    GOOS=linux \
    CGO_ENABLED=0 \
    go build -v --installsuffix cgo --ldflags="-s" -o myapp

# ---------------------------------------------------------------------
#  The second stage container, for running the application
# ---------------------------------------------------------------------
FROM alpine:3.8
COPY --from=builder /app/cmd/webapp/myapp /app/myapp

WORKDIR /app

ENTRYPOINT ["/myapp"]