FROM --platform=$BUILDPLATFORM golang:1.20 as builder

## GOLANG env
ARG GOPROXY="https://proxy.golang.org|direct"
ARG GO111MODULE="on"

# Copy go.mod and download dependencies
WORKDIR /node-termination-handler
COPY go.mod .
COPY go.sum .
RUN go mod download

ARG CGO_ENABLED=0
ARG TARGETOS TARGETARCH
ARG GOOS=$TARGETOS
ARG GOARCH=$TARGETARCH

# Build
COPY . .
RUN make build
# In case the target is build for testing:
# $ docker build --target=builder -t test .
ENTRYPOINT ["/node-termination-handler/build/node-termination-handler"]

# Build the final image with only the binary
FROM amazonlinux:2 as amazonlinux
FROM scratch
WORKDIR /
COPY --from=builder /node-termination-handler/build/node-termination-handler .
COPY --from=amazonlinux /etc/ssl/certs/ca-bundle.crt /etc/ssl/certs/
COPY THIRD_PARTY_LICENSES.md .
USER 1000
ENTRYPOINT ["/node-termination-handler"]