38 lines
812 B
Docker
38 lines
812 B
Docker
# syntax=docker/dockerfile:1
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ARG GO_VERSION=1.17
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FROM golang:${GO_VERSION}-alpine AS base
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RUN apk add --no-cache git rsync
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WORKDIR /src
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FROM base AS vendored
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RUN --mount=target=/context \
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--mount=target=.,type=tmpfs \
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--mount=target=/go/pkg/mod,type=cache <<EOT
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set -e
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rsync -a /context/. .
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go mod tidy
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go mod vendor
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mkdir /out
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cp -r go.mod go.sum vendor /out
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EOT
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FROM scratch AS update
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COPY --from=vendored /out /out
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FROM vendored AS validate
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RUN --mount=target=/context \
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--mount=target=.,type=tmpfs <<EOT
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set -e
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rsync -a /context/. .
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git add -A
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rm -rf vendor
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cp -rf /out/* .
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if [ -n "$(git status --porcelain -- go.mod go.sum vendor)" ]; then
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echo >&2 'ERROR: Vendor result differs. Please vendor your package with "make vendor"'
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git status --porcelain -- go.mod go.sum vendor
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exit 1
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fi
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EOT
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