ARG REPO=library
FROM golang:1.12-alpine AS builder

RUN apk add --no-cache git

RUN mkdir /app
WORKDIR /app

COPY ./go.mod ./go.sum /app/
RUN go mod download

COPY ./*.go /app/

ARG ARCH=amd64
ARG VERSION=dev
ENV CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH}
RUN go build -ldflags "-X main.version=${VERSION}" -a -installsuffix nocgo -o minitor .

FROM ${REPO}/alpine:latest
RUN mkdir /app
WORKDIR /app/

# Copy minitor in
COPY --from=builder /app/minitor .

# Add common checking tools
RUN apk --no-cache add bash==4.4.19-r1 curl==7.64.0-r3 jq==1.6-r0

# Add minitor user for running as non-root
RUN addgroup -S minitor && adduser -S minitor -G minitor

# Copy scripts
COPY ./scripts /app/scripts
RUN chmod -R 755 /app/scripts

# Drop to non-root user
USER minitor

ENTRYPOINT [ "./minitor" ]

# vim: set filetype=dockerfile: