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sign and detect tampering #809

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20 changes: 20 additions & 0 deletions cmd/sign-object/Dockerfile
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Original file line number Diff line number Diff line change
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FROM --platform=$BUILDPLATFORM golang:1.25-trixie AS builder

ENV GO111MODULE=on CGO_ENABLED=0
WORKDIR /src
ARG TARGETOS TARGETARCH

COPY go.mod go.sum ./
RUN --mount=type=cache,target=/root/.cache/go-build \
--mount=type=cache,target=/go/pkg \
go mod download

COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
--mount=type=cache,target=/go/pkg \
GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /sign-object ./cmd/sign-object

FROM gcr.io/distroless/static-debian13:latest
COPY --from=builder /sign-object /usr/local/bin/sign-object
WORKDIR /work
ENTRYPOINT ["sign-object"]
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