Demo image needs curl

Signed-off-by: jamshale <jamiehalebc@gmail.com>

Author: jamshale

docker/Dockerfile.demo

@@ -5,8 +5,9 @@ ENV ENABLE_PTVSD 0
 ENV ENABLE_PYDEVD_PYCHARM 0
 ENV PYDEVD_PYCHARM_HOST "host.docker.internal"
 
-RUN apt-get install -y --no-install-recommends \
-    curl 
+RUN apt-get update -y && \
+    apt-get install -y --no-install-recommends \
+    curl
 
 RUN mkdir -p bin && curl -L -o bin/jq \
 	https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64 && \