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Dockerfile
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# Build the manager binary
FROM golang:1.21 as builder
ARG TARGETOS
ARG TARGETARCH
WORKDIR /workspace
# Copy the Go Modules manifests
COPY go.mod go.mod
COPY go.sum go.sum
# 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 go mod download
# Copy the go source
COPY api api
COPY cmd cmd
COPY constants constants
COPY internal internal
COPY metrics metrics
COPY probe probe
COPY types types
# Build
# the GOARCH has not a default value to allow the binary be built according to the host where the command
# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o pie ./cmd
FROM ubuntu:22.04
RUN apt-get update \
&& apt-get install -y --no-install-recommends fio jq \
&& rm -rf /var/lib/apt/lists/*
COPY --from=builder /workspace/pie /
EXPOSE 8080/tcp
EXPOSE 8081/tcp
EXPOSE 8082/tcp
USER 10000:10000
ENTRYPOINT [ "/pie" ]