Dockerfile

# Dynamic Builds
ARG BUILDER_IMAGE=golang:1.20-buster
ARG FINAL_IMAGE=debian:buster-slim

# Build Stage
FROM ${BUILDER_IMAGE} AS builder

# Build Args
ARG GIT_REVISION=""

# Ensure ca-certificates are up to date on the image
RUN update-ca-certificates

# Use modules for dependencies
WORKDIR $GOPATH/src/github.com/bbengfort/noaalert

COPY go.mod .
COPY go.sum .

ENV CGO_ENABLED=0
ENV GO111MODULE=on
RUN go mod download
RUN go mod verify

# Copy package
COPY . .

# Build binary
RUN go build -v -o /go/bin/noaalert -ldflags="-X 'github.com/bbengfort/noaalert.GitVersion=${GIT_REVISION}'" ./cmd/noaalert

# Final Stage
FROM ${FINAL_IMAGE} AS final

LABEL maintainer="Benjamin Bengfort <benjamin@bengfort.com>"
LABEL description="Converts NOAA Severe Weather Alerts API requests into real time events"

# Ensure ca-certificates are up to date
RUN set -x && apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get install -y ca-certificates && \
    rm -rf /var/lib/apt/lists/*

# Copy the binary to the production image from the builder stage
COPY --from=builder /go/bin/noaalert /usr/local/bin/noaalert

CMD [ "/usr/local/bin/noaalert", "publish" ]