FROM scratch AS base
ENV VERSION=1.7.2
ENV SRC_HASH=7f16510394ebe12cd405bc9d2cf4c6ef2c8baf6213006d52c05dcbce0bf06100
ENV SRC_FILE=v${VERSION}.tar.gz
ENV SRC_SITE=https://github.com/siderolabs/talos/archive/refs/tags/${SRC_FILE}
ENV GOPATH=/cache/go
ENV GOCACHE=/cache/
ENV GOWORK=off
ENV GOPROXY=https://proxy.golang.org,direct
ENV GOSUMDB=sum.golang.org
ENV CGO_ENABLED=0
ENV GOHOSTOS=linux
ENV GOHOSTARCH=amd64
ENV GO11MODULE=on

FROM base AS fetch
COPY --from=stagex/busybox . /
COPY --from=stagex/go . /
COPY --from=stagex/ca-certificates . /
ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .
RUN tar -xvf ${SRC_FILE}
WORKDIR talos-${VERSION}
RUN go get ./...

FROM fetch AS build
RUN --network=none go build -v -trimpath ./cmd/talosctl

from build as install
RUN <<-EOF
    mkdir -p /rootfs/usr/bin/
    cp talosctl /rootfs/usr/bin/
EOF

FROM stagex/filesystem AS package
COPY --from=install /rootfs/./ /