Dockerfile

# syntax=docker/dockerfile:1
FROM golang AS builder
ARG timezone=Asia/Bangkok
ENV TZ $timezone
WORKDIR /app

# install dumb-init
RUN apt-get update && \
    apt-get -y install dumb-init && \
    apt-get -y clean

# pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change
COPY go.* ./
RUN go mod download && go mod verify

# let's build project
COPY . .
RUN CGO_ENABLED=0 go build -v \
    -buildvcs=false \
    -installsuffix 'static' \
    -ldflags="-X 'main.version=$(git rev-parse --short HEAD)' -X 'main.build=$(date --iso-8601=seconds)'" \
    -o dist/server .

# pack PRD image
FROM gcr.io/distroless/base:nonroot
LABEL maintainer="Kawin Viriyaprasopsook <kawin.vir@zercle.tech>"

ARG timezone=Asia/Bangkok

ENV LANG C.UTF-8
ENV LC_ALL C.UTF-8
ENV TZ $timezone

# Create app dir
WORKDIR /app
COPY --from=builder /usr/bin/dumb-init /usr/bin/dumb-init
COPY --from=builder /app/dist/server /app/server
COPY ./configs /app/configs
COPY ./assets/docs /app/assets/docs

EXPOSE 8080 8443

# default run entrypoint
ENTRYPOINT ["/usr/bin/dumb-init", "--", "/app/server"]
CMD ["--env=prd"]