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Yuvaraj Kakaraparthi
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Jun 8, 2023
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# syntax=docker/dockerfile:1.4 | ||
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# Copyright 2023 The Kubernetes Authors. | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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# Build the manager binary | ||
# Run this with docker build --build-arg builder_image=<golang:x.y.z> | ||
ARG builder_image | ||
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# Build architecture | ||
ARG ARCH | ||
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# Ignore Hadolint rule "Always tag the version of an image explicitly." | ||
# It's an invalid finding since the image is explicitly set in the Makefile. | ||
# https://github.com/hadolint/hadolint/wiki/DL3006 | ||
# hadolint ignore=DL3006 | ||
FROM ${builder_image} as builder | ||
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# Run this with docker build --build-arg goproxy=$(go env GOPROXY) to override the goproxy | ||
ARG goproxy=https://proxy.golang.org | ||
ENV GOPROXY=$goproxy | ||
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# Gets additional CAPIM dependencies | ||
WORKDIR /tmp | ||
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WORKDIR /workspace | ||
COPY go.mod go.mod | ||
COPY go.sum go.sum | ||
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# Essentially, change directories into the test go module | ||
WORKDIR /workspace/test | ||
# Copy the Go Modules manifests | ||
COPY test/go.mod go.mod | ||
COPY test/go.sum go.sum | ||
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# Cache deps before building and copying source so that we don't need to re-download as much | ||
# and so that source changes don't invalidate our downloaded layer | ||
RUN --mount=type=cache,target=/go/pkg/mod \ | ||
go mod download | ||
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# This needs to build with the entire Cluster API context | ||
WORKDIR /workspace | ||
# Copy in cluster-api (which includes the test/infrastructure/inmemory subdirectory) | ||
COPY . . | ||
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# Essentially, change directories into CAPIM | ||
WORKDIR /workspace/test/infrastructure/inmemory | ||
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# Build | ||
ARG ARCH | ||
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# Build the CAPIM manager using the compiler cache folder | ||
RUN --mount=type=cache,target=/root/.cache/go-build \ | ||
--mount=type=cache,target=/go/pkg/mod \ | ||
CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -trimpath -a -o /workspace/manager main.go | ||
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FROM gcr.io/distroless/static:latest-${ARCH} | ||
WORKDIR / | ||
COPY --from=builder /workspace/manager . | ||
# Use uid of nonroot user (65532) because kubernetes expects numeric user when applying pod security policies | ||
USER 65532 | ||
ENTRYPOINT ["/manager"] |