Dockerfile

FROM golang:1.12 AS build
ARG LDFLAGS
COPY . /go
RUN go build -o helm-monitor -ldflags "$LDFLAGS" ./cmd/...

FROM alpine AS helm
ENV HELM_VERSION=v2.13.0
ENV HELM_TMP_FILE=helm-${HELM_VERSION}-linux-amd64.tar.gz
RUN wget https://storage.googleapis.com/kubernetes-helm/${HELM_TMP_FILE} && \
  wget https://storage.googleapis.com/kubernetes-helm/${HELM_TMP_FILE}.sha256
RUN apk --no-cache add openssl
RUN if [ "$(openssl sha1 -sha256 ${HELM_TMP_FILE} | awk '{print $2}')" != "$(cat helm-${HELM_VERSION}-linux-amd64.tar.gz.sha256)" ]; \
  then \
    echo "SHA sum of ${HELM_TMP_FILE} does not match. Aborting."; \
    exit 1; \
  fi
RUN tar -xvf helm-${HELM_VERSION}-linux-amd64.tar.gz

FROM alpine:3.8
COPY --from=helm /linux-amd64/helm /usr/local/bin/helm
RUN helm init --skip-refresh --client-only && \
  mkdir -p /root/.helm/plugins/helm-monitor
COPY plugin.yaml /root/.helm/plugins/helm-monitor/plugin.yaml
COPY --from=build /go/helm-monitor /root/.helm/plugins/helm-monitor/helm-monitor
ENTRYPOINT ["helm"]