Dockerfile

# syntax=docker/dockerfile:1

FROM --platform=$BUILDPLATFORM golang:1.22.2-alpine as builder
RUN apk --no-cache add ca-certificates git
WORKDIR /app
COPY . .

RUN --mount=type=cache,target=/root/go/pkg/mod \
    go mod download

ARG TARGETOS
ARG TARGETARCH
ARG TARGETVARIANT

RUN --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH GOAMD64=$([[ $TARGETARCH == "amd64" ]] && echo ${TARGETVARIANT:-v1} || echo "v1") GOARM=7 \
    go build -tags 'osusergo netgo urfave_cli_no_docs no_mocks' \
    -ldflags "-s -w -extldflags -static -X go.miragespace.co/specter/cmd/specter.Build=`git rev-parse --short HEAD` -X go.miragespace.co/specter/acme.BuildTime=`date +%s`" \
    -o bin/specter .

FROM scratch
WORKDIR /app
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /app/bin/specter /app/specter

ENTRYPOINT ["/app/specter"]