From e756ae522a08f0ba1492977ec7bb2d855a39fc8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Batuhan=20Apayd=C4=B1n?= <batuhan.apaydin@trendyol.com>
Date: Wed, 1 Jun 2022 15:35:02 +0300
Subject: [PATCH] chore(dockerfile): use buildx features for cross-compilation
 (#4023)
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* chore(dockerfile): use buildx features for cross-compilation

Signed-off-by: Batuhan Apaydın <batuhan.apaydin@trendyol.com>

* feat(kyverno): main container image

Signed-off-by: Batuhan Apaydın <batuhan.apaydin@trendyol.com>

Co-authored-by: shuting <shuting@nirmata.com>
---
 cmd/cli/kubectl-kyverno/Dockerfile | 26 ++++++++++++++++----------
 cmd/initContainer/Dockerfile       | 26 ++++++++++++++++----------
 cmd/kyverno/Dockerfile             | 28 +++++++++++++++++-----------
 3 files changed, 49 insertions(+), 31 deletions(-)

diff --git a/cmd/cli/kubectl-kyverno/Dockerfile b/cmd/cli/kubectl-kyverno/Dockerfile
index 802e222bb5..66fc1b7958 100644
--- a/cmd/cli/kubectl-kyverno/Dockerfile
+++ b/cmd/cli/kubectl-kyverno/Dockerfile
@@ -1,22 +1,28 @@
 # Multi-stage docker build
 # Build stage
-FROM golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS builder
-
+FROM --platform=${BUILDPLATFORM} golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS base
+WORKDIR /src
 LABEL maintainer="Kyverno"
 
+COPY go.* .
+
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
+
+FROM --platform=${BUILDPLATFORM} tonistiigi/xx:1.1.1@sha256:23ca08d120366b31d1d7fad29283181f063b0b43879e1f93c045ca5b548868e9 AS xx
+
+FROM base AS builder
+
 # LD_FLAGS is passed as argument from Makefile. It will be empty, if no argument passed
 ARG LD_FLAGS
 ARG TARGETPLATFORM
 
-ADD . /kyverno
-WORKDIR /kyverno
+COPY --from=xx / /
 
-RUN export GOOS=$(echo ${TARGETPLATFORM} | cut -d / -f1) && \
-    export GOARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2)
-
-RUN go env
-
-RUN CGO_ENABLED=0 go build -o /output/kyverno -ldflags="${LD_FLAGS}" -v ./cmd/cli/kubectl-kyverno/
+RUN --mount=type=bind,target=. \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg/mod \
+    CGO_ENABLED=0 xx-go build -o /output/kyverno -ldflags="${LD_FLAGS}" -v ./cmd/cli/kubectl-kyverno/
 
 # Packaging stage
 FROM scratch
diff --git a/cmd/initContainer/Dockerfile b/cmd/initContainer/Dockerfile
index e063a5a4db..20c7918543 100644
--- a/cmd/initContainer/Dockerfile
+++ b/cmd/initContainer/Dockerfile
@@ -1,22 +1,28 @@
 # Multi-stage docker build
 # Build stage
-FROM golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS builder
-
+FROM --platform=${BUILDPLATFORM} golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS base
+WORKDIR /src
 LABEL maintainer="Kyverno"
 
+COPY go.* .
+
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
+
+FROM --platform=${BUILDPLATFORM} tonistiigi/xx:1.1.1@sha256:23ca08d120366b31d1d7fad29283181f063b0b43879e1f93c045ca5b548868e9 AS xx
+
+FROM base AS builder
+
 # LD_FLAGS is passed as argument from Makefile. It will be empty, if no argument passed
 ARG LD_FLAGS
 ARG TARGETPLATFORM
 
-ADD . /kyverno
-WORKDIR /kyverno
+COPY --from=xx / /
 
-RUN export GOOS=$(echo ${TARGETPLATFORM} | cut -d / -f1) && \
-    export GOARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2)
-
-RUN go env
-
-RUN CGO_ENABLED=0 go build -o /output/kyvernopre -ldflags="${LD_FLAGS}" -v ./cmd/initContainer/
+RUN --mount=type=bind,target=. \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg/mod \
+    CGO_ENABLED=0 xx-go build -o /output/kyvernopre -ldflags="${LD_FLAGS}" -v ./cmd/initContainer/
 
 # Packaging stage
 FROM scratch
diff --git a/cmd/kyverno/Dockerfile b/cmd/kyverno/Dockerfile
index 71b58e72ca..d533091be3 100644
--- a/cmd/kyverno/Dockerfile
+++ b/cmd/kyverno/Dockerfile
@@ -1,26 +1,32 @@
-FROM golang:alpine AS certs
+FROM --platform=${BUILDPLATFORM} golang:alpine AS certs
 
 LABEL maintainer="Kyverno"
 
 RUN apk add --no-cache ca-certificates
 
-FROM golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS builder
-
+FROM --platform=${BUILDPLATFORM} golang@sha256:724abf4dd44985d060f7aa91af5211eb2052491424bd497ba3ddc31f7cee969d AS base
+WORKDIR /src
 LABEL maintainer="Kyverno"
 
+COPY go.* .
+
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
+
+FROM --platform=${BUILDPLATFORM} tonistiigi/xx:1.1.1@sha256:23ca08d120366b31d1d7fad29283181f063b0b43879e1f93c045ca5b548868e9 AS xx
+
+FROM base AS builder
+
 # LD_FLAGS is passed as argument from Makefile. It will be empty, if no argument passed
 ARG LD_FLAGS
 ARG TARGETPLATFORM
 
-ADD . /kyverno
-WORKDIR /kyverno
+COPY --from=xx / /
 
-RUN export GOOS=$(echo ${TARGETPLATFORM} | cut -d / -f1) && \
-    export GOARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2)
-
-RUN go env
-
-RUN CGO_ENABLED=0 go build -o /output/kyverno -ldflags="${LD_FLAGS}" -v ./cmd/kyverno/
+RUN --mount=type=bind,target=. \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg/mod \
+    CGO_ENABLED=0 xx-go build -o /output/kyverno -ldflags="${LD_FLAGS}" -v ./cmd/kyverno/
 
 # Packaging stage
 FROM scratch