builds: multi-arch docker image

Author: zegl

.goreleaser.yml

@@ -24,43 +24,6 @@ archives:
     files:
       - LICENSE
 
-dockers:
-- goos: linux
-  goarch: amd64
-  ids:
-  - kube-score
-  image_templates:
-  - "zegl/kube-score:{{ .Tag }}"
-  - "zegl/kube-score:latest"
-  dockerfile: cmd/kube-score/Dockerfile
-
-- goos: linux
-  goarch: amd64
-  ids:
-  - kube-score
-  image_templates:
-  - "zegl/kube-score:{{ .Tag }}-helm"
-  - "zegl/kube-score:latest-helm"
-  dockerfile: cmd/kube-score/helm.Dockerfile
-
-- goos: linux
-  goarch: amd64
-  ids:
-  - kube-score
-  image_templates:
-  - "zegl/kube-score:{{ .Tag }}-helm3"
-  - "zegl/kube-score:latest-helm3"
-  dockerfile: cmd/kube-score/helm3.Dockerfile
-
-- goos: linux
-  goarch: amd64
-  ids:
-  - kube-score
-  image_templates:
-  - "zegl/kube-score:{{ .Tag }}-kustomize"
-  - "zegl/kube-score:latest-kustomize"
-  dockerfile: cmd/kube-score/kustomize.Dockerfile
-
 checksum:
   name_template: 'checksums.txt'
 

Dockerfile

@@ -0,0 +1,72 @@
+# syntax=docker/dockerfile:1
+
+ARG ALPINE_IMAGE=alpine:3.17.0
+
+FROM ${ALPINE_IMAGE} as args
+ARG HELM_VERSION=v3.10.2
+ARG KUSTOMIZE_VERSION=v4.5.7
+
+FROM args as args-amd64
+ARG HELM_SHA256SUM="2315941a13291c277dac9f65e75ead56386440d3907e0540bf157ae70f188347"
+ARG KUSTOMIZE_SHA256SUM="701e3c4bfa14e4c520d481fdf7131f902531bfc002cb5062dcf31263a09c70c9"
+
+FROM args as args-arm64
+ARG HELM_SHA256SUM="57fa17b6bb040a3788116557a72579f2180ea9620b4ee8a9b7244e5901df02e4"
+ARG KUSTOMIZE_SHA256SUM="65665b39297cc73c13918f05bbe8450d17556f0acd16242a339271e14861df67"
+
+# FROM args as args-arm
+# ARG HELM_SHA256SUM="25af344f46348958baa1c758cdf3b204ede3ddc483be1171ed3738d47efd0aae"
+
+FROM --platform=$BUILDPLATFORM args-${TARGETARCH} as downloader
+
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+ARG TARGETARCH
+
+RUN apk update && apk add curl
+
+RUN curl --location "https://get.helm.sh/helm-${HELM_VERSION}-linux-${TARGETARCH}.tar.gz" > helm.tar.gz && \
+    echo "${HELM_SHA256SUM}  helm.tar.gz" | sha256sum && \
+    tar xzvf helm.tar.gz && \
+    chmod +x /linux-${TARGETARCH}/helm && \
+    mv  /linux-${TARGETARCH}/helm /usr/bin/helm
+
+RUN curl --location "https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2F${KUSTOMIZE_VERSION}/kustomize_${KUSTOMIZE_VERSION}_linux_${TARGETARCH}.tar.gz" > kustomize.tar.gz && \
+    echo "${KUSTOMIZE_SHA256SUM}  kustomize.tar.gz" | sha256sum && \
+    tar xzvf kustomize.tar.gz && \
+    chmod +x kustomize && \
+    mv kustomize /usr/bin/kustomize
+
+FROM golang:1.19-alpine as builder
+ARG TARGETARCH
+ARG TARGETPLATFORM
+WORKDIR /kube-score
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+
+ARG KUBE_SCORE_VERSION
+ARG KUBE_SCORE_COMMIT
+ARG KUBE_SCORE_DATE
+
+RUN --mount=type=cache,target=/root/.cache/go-build \
+    CGO_ENABLED=0 \
+    go build \
+    -ldflags="-X 'main.version=${KUBE_SCORE_VERSION}-docker-${TARGETPLATFORM}' -X 'main.commit=${KUBE_SCORE_COMMIT}' -X 'main.date=${KUBE_SCORE_DATE}'" \
+    -o /usr/bin/kube-score \
+    ./cmd/kube-score
+
+FROM ${ALPINE_IMAGE} as runner
+RUN apk update && \
+    apk upgrade && \
+    apk add bash ca-certificates
+COPY --from=downloader /usr/bin/helm /usr/bin/helm
+COPY --from=downloader /usr/bin/kustomize /usr/bin/kustomize
+COPY --from=builder /usr/bin/kube-score /kube-score
+COPY --from=builder /usr/bin/kube-score /usr/bin/kube-score
+ 
+# Dry runs
+RUN /kube-score version && helm version && kustomize version
+
+WORKDIR /project
+ENTRYPOINT ["/kube-score"]

hack/release-docker.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+#VERSION="$(git describe --tags --abbrev=0)"
+VERSION="v1.16.0-dev"
+
+docker buildx build \
+    --build-arg KUBE_SCORE_VERSION=${VERSION} \
+    --build-arg "KUBE_SCORE_COMMIT=$(git rev-parse HEAD)" \
+    --build-arg "KUBE_SCORE_DATE=$(date -Iseconds)" \
+    --platform linux/arm64 \
+    --platform linux/amd64 \
+    -t zegl/kube-score:${VERSION} \
+    --push \
+    --target runner \
+    .