FROM golang:1.19.0-bullseye AS builder WORKDIR /app COPY . . RUN go build -o main . FROM debian:bullseye AS runtime WORKDIR /app RUN apt-get update && apt-get upgrade --no-install-recommends -y \ && apt-get install -y curl ca-certificates \ && apt-get clean && rm -rf /var/lib/apt/lists/* COPY --from=builder /app/main . ENV PORT=5000 ENV HOSTNAME=0.0.0.0 ENV ENVIRONMENT=production EXPOSE ${PORT} ENTRYPOINT [ "/app/main" ]