adding missing docker dependencies openssl and pkgconfig

Signed-off-by: Vanessa Sochat <vsochat@stanford.edu>

docker/Dockerfile

@@ -2,5 +2,7 @@ ARG  FROMTAG=latest
 FROM quay.io/nushell/nu-base:${FROMTAG} as base
 FROM rust:1.37-slim
 COPY --from=base /usr/local/bin/nu /usr/local/bin/nu
+RUN apt-get update && \
+    apt-get install -y pkg-config libssl-dev
 ENTRYPOINT ["nu"]
 CMD ["-l", "info"]

docker/Dockerfile.nu-base

@@ -7,6 +7,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get install -y libssl-dev \
     libxcb-composite0-dev \
     libx11-dev \
+    libssl-dev \
     pkg-config \
     curl