ARG ARCH

# STEP 1 build executable binary
FROM golang:1.17.0-alpine3.13@sha256:9e861617f53e401f787018eb1e8db982dff73385d4e3d515af7262852c174178 AS builder-amd64
FROM arm32v7/golang:1.17.0-alpine3.13@sha256:b7df03d979cae913afaf412b3cc72690b15142fe8cc03e1381cac2cd6e11caf8 AS builder-arm
FROM arm64v8/golang:1.17.0-alpine3.13@sha256:904133298dcce01d471e3888830369639a11a93f351cf5188b7859c4667a902d AS builder-arm64
FROM builder-${ARCH} AS builder

ENV CADVISOR_VERSION="v0.38.8"

WORKDIR $GOPATH/src/github.com/google/cadvisor

RUN apk upgrade --no-cache \
 && apk add libc6-compat device-mapper findutils zfs build-base linux-headers bash git wget curl tar \
 && curl -L "https://github.com/google/cadvisor/archive/${CADVISOR_VERSION}.tar.gz" | tar xvz --strip 1 \
 && ./build/build.sh

# STEP 2 build the image including only the binary
FROM alpine:3.14.2@sha256:e1c082e3d3c45cccac829840a25941e679c25d438cc8412c2fa221cf1a824e6a AS base-amd64
FROM arm32v7/alpine:3.14.2@sha256:e12ff876f0075740ed3d7bdf788107ae84c1b3dd6dc98b3baea41088aba5236f AS base-arm
FROM arm64v8/alpine:3.14.2@sha256:b06a5cf61b2956088722c4f1b9a6f71dfe95f0b1fe285d44195452b8a1627de7 AS base-arm64
FROM base-${ARCH}

RUN apk upgrade --no-cache && apk add \
    libc6-compat="1.2.2-r3" \
    device-mapper="2.02.187-r1" \
    findutils="4.8.0-r1" \
    zfs="2.0.3-r1" \
 && rm -rf /var/cache/apk/*

COPY --from=builder /go/src/github.com/google/cadvisor/cadvisor /usr/bin/cadvisor

EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=3s CMD wget --quiet --tries=1 --spider http://127.0.0.1:8080/healthz || exit 1

ENTRYPOINT ["/usr/bin/cadvisor", "-logtostderr"]