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Dockerfile
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ARG GO_VERSION=1.23
ARG XX_VERSION=1.4.0
FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine AS builder
# Copy the build utilities.
COPY --from=xx / /
ARG TARGETPLATFORM
WORKDIR /workspace
# copy modules manifests
COPY go.mod go.mod
COPY go.sum go.sum
# cache modules
RUN go mod download
# copy source code
COPY main.go main.go
COPY controllers/ controllers/
# build
ENV CGO_ENABLED=0
RUN xx-go build -a -o source-watcher main.go
FROM alpine:3.20
RUN apk add --no-cache ca-certificates tini
COPY --from=builder /workspace/source-watcher /usr/local/bin/
RUN addgroup -S controller && adduser -S controller -G controller
USER controller
ENTRYPOINT [ "/sbin/tini", "--", "source-watcher" ]