message: [docker] Add socat to tools image
  Going to use `socat` to workaround the lack of Host Networking on OS X
  for the connection to Vault via an SSH tunnel.
  Closes:
  Approved by: sherry-x
diff: @@ -21,6 +21,8 @@ RUN ./docker/build-common.sh
  ### Production Image ###
  FROM debian:buster-slim AS prod
  +RUN apt-get update && apt-get -y install socat && apt-get clean && rm -r /var/lib/apt/lists/*
  +
  COPY --from=builder /libra/target/release/libra-management /usr/local/bin
  ARG BUILD_DATE
  