tag-checker/Dockerfile.multi-stage

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ARG REPO=library
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FROM golang:1.17-alpine AS builder
# hadolint ignore=DL3018
RUN apk add --no-cache git
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# hadolint ignore=DL3059
RUN mkdir /app
WORKDIR /app
COPY ./go.mod ./go.sum /app/
RUN go mod download
COPY ./main.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 tag-checker .
# hadolint ignore=DL3007
FROM alpine:latest as certs
# hadolint ignore=DL3018
RUN apk --no-cache add ca-certificates
FROM scratch
COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /app/tag-checker /
ENTRYPOINT [ "/tag-checker" ]