ARG GO_IMAGE=docker.io/library/golang:1.27.2-alpine3.24@sha256:85dc1069ac644ea3c527b177303a406eb3358192816cd7f9e5848eb658851673
ARG UPSTREAM=quay.io/prometheus/alertmanager@sha256:e9733bafb1bdef9b00e25a21f8f99dc26a22224bf16641ad754d1649f4c3357a
FROM ${UPSTREAM} AS original
FROM ${GO_IMAGE} AS build
LABEL io.thepeoples.hardened.build-owner="hardened-batch3-slice4"
ARG SOURCE_URL=https://codeload.github.com/prometheus/alertmanager/tar.gz/73c6bfe7393929211294c1954f30d8ed78e4d0ad
ARG SOURCE_SHA256=5c5c72ec6b4c4746d523f2ed1994dfec4b94f7457e530ee6fb16cfec158e545e
ARG SOURCE_COMMIT=73c6bfe7393929211294c1954f30d8ed78e4d0ad
ARG VERSION=0.34.1
ARG BUILD_DATE=2026-09-17T08:12:07Z
ARG GO_BUMPS="golang.org/x/net@v0.60.0 golang.org/x/crypto@v0.57.0 google.golang.org/grpc@v1.83.2 go.opentelemetry.io/otel/exporters/otlp/otlptrace@v1.45.0 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc@v1.45.0 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp@v1.45.0 go.opentelemetry.io/otel/sdk@v1.45.0"
ARG UI_URL=https://github.com/prometheus/alertmanager/releases/download/v0.34.1/alertmanager-web-ui-0.34.1.tar.gz
ARG UI_SHA256=881fe0f7beb9573f35be47dd233af6220e72c8db72c03bcd1780402eb8dc1307
ENV GOWORK=off GOTOOLCHAIN=local CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOMAXPROCS=4
WORKDIR /src
RUN wget -q -O /tmp/upstream.tar.gz "${SOURCE_URL}" \
 && printf '%s  %s\n' "${SOURCE_SHA256}" /tmp/upstream.tar.gz | sha256sum -c - \
 && tar -xzf /tmp/upstream.tar.gz --strip-components=1 -C /src
RUN wget -q -O /tmp/web-ui.tar.gz "${UI_URL}" \
 && printf '%s  %s\n' "${UI_SHA256}" /tmp/web-ui.tar.gz | sha256sum -c - \
 && tar -xzf /tmp/web-ui.tar.gz -C ui/app
RUN mkdir -p /out/bin /out/records /out/source \
 && cp go.mod /out/records/upstream.go.mod \
 && cp go.sum /out/records/upstream.go.sum \
 && if [ -n "${GO_BUMPS}" ]; then go get ${GO_BUMPS}; fi \
 && go mod download \
 && go mod verify \
 && go build -p 4 -tags netgo -mod=readonly -buildvcs=false -trimpath -ldflags "-s -w -X github.com/prometheus/common/version.Version=${VERSION} -X github.com/prometheus/common/version.Revision=${SOURCE_COMMIT} -X github.com/prometheus/common/version.Branch=hardened -X github.com/prometheus/common/version.BuildUser=thepeoples.io -X github.com/prometheus/common/version.BuildDate=${BUILD_DATE}" -o /out/bin/ ./cmd/alertmanager ./cmd/amtool \
 && go version -m /out/bin/alertmanager > /out/records/go-version-m.txt \
 && go version -m /out/bin/amtool > /out/records/amtool-go-version-m.txt \
 && go list -m -json all > /out/records/modules.json \
 && printf '%s\n' "${SOURCE_COMMIT}" > /out/records/upstream-commit \
 && printf '%s\n' "${GO_BUMPS}" > /out/records/bumps \
 && cp go.mod go.sum LICENSE /out/records/ \
 && mkdir /out/licenses && cp LICENSE /out/licenses/ \
 && if [ -f NOTICE ]; then cp NOTICE /out/records/ && cp NOTICE /out/licenses/; fi \
 && go mod vendor \
 && tar -czf /out/source/vendor.tar.gz vendor \
 && cp /tmp/upstream.tar.gz /out/source/upstream.tar.gz \
 && cp /tmp/web-ui.tar.gz /out/source/web-ui.tar.gz \
 && cp -R /out/records /out/source/records \
 && cd /out/source && sha256sum upstream.tar.gz vendor.tar.gz web-ui.tar.gz records/* > SHA256SUMS
FROM scratch AS source
LABEL io.thepeoples.hardened.build-owner="hardened-batch3-slice4"
COPY --from=build /out/source/ /
FROM scratch
COPY --from=original /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=original /etc/passwd /etc/group /etc/nsswitch.conf /etc/
COPY --from=original --chown=65534:65534 /etc/alertmanager/ /etc/alertmanager/
COPY --from=original --chown=65534:65534 /alertmanager/ /alertmanager/
COPY --from=build --chmod=0755 /out/bin/ /bin/
COPY --from=build /out/records/ /usr/share/tp-hardened/alertmanager/
COPY --from=build /out/licenses/ /usr/share/tp-hardened/alertmanager/licenses/
USER 65534:65534
WORKDIR /alertmanager
VOLUME ["/alertmanager"]
EXPOSE 9093
ENTRYPOINT ["/bin/alertmanager"]
CMD ["--config.file=/etc/alertmanager/alertmanager.yml", "--storage.path=/alertmanager"]
LABEL org.opencontainers.image.version="v0.34.1" \
      org.opencontainers.image.source="https://github.com/prometheus/alertmanager" \
      org.opencontainers.image.revision="73c6bfe7393929211294c1954f30d8ed78e4d0ad" \
      org.opencontainers.image.licenses="Apache-2.0" \
      io.thepeoples.hardened.upstream="quay.io/prometheus/alertmanager:v0.34.1@sha256:e9733bafb1bdef9b00e25a21f8f99dc26a22224bf16641ad754d1649f4c3357a" \
      io.thepeoples.hardened.ladder="b+minimize" \
      io.thepeoples.hardened.toolchain="go1.27.2" \
      io.thepeoples.hardened.source-status="export vendor and runtime asset sources before publication"