message: [dkr] Install Vault in the init image
  I want to make some changes in Vault in the testnet genesis pod.
  Closes:
diff: @@ -24,8 +24,9 @@ RUN ./docker/build-common.sh
  ### Production Image ###
  FROM debian:buster AS prod
  -RUN apt-get update && apt-get -y install wget gettext-base && apt-get clean && rm -r /var/lib/apt/lists/*
  -RUN cd /usr/local/bin && wget "https://storage.googleapis.com/kubernetes-release/release/v1.17.0/bin/linux/amd64/kubectl" -O kubectl && chmod +x kubectl
  +RUN apt-get update && apt-get -y install busybox gettext-base && apt-get clean && rm -r /var/lib/apt/lists/*
  +RUN cd /usr/local/bin && busybox wget "https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kubectl" -O kubectl && chmod +x kubectl
  +RUN cd /usr/local/bin && busybox wget "https://releases.hashicorp.com/vault/1.5.0/vault_1.5.0_linux_amd64.zip" -O - | busybox unzip - && chmod +x vault
  RUN mkdir -p /opt/libra/bin
  COPY --from=builder /libra/target/release/config-builder /opt/libra/bin
  