Update Dockerfile

Dockerfile

@@ -2,11 +2,11 @@ ARG cuda_version=10.0
 ARG cudnn_version=7
 FROM nvidia/cuda:${cuda_version}-cudnn${cudnn_version}-devel
 
-RUN apt install apt-transport-https ca-certificates curl software-properties-common
+RUN apt-get install apt-transport-https ca-certificates curl software-properties-common
 RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
 RUN add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic test"
-RUN apt update
-RUN apt install docker-ce
+RUN apt-get update
+RUN apt-get install docker-ce
 
 # Install system packages
 RUN apt-get update && apt-get install -y --no-install-recommends \