Update Dockerfile

Dockerfile

@@ -1,11 +1,11 @@
 FROM ubuntu
 
 # RUN echo http://dl-cdn.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories
-RUN apt install -y git
-RUN apt install -y software-properties-common
+RUN apt-get update
+RUN apt-get install -y software-properties-common
 RUN apt-add-repository ppa:swi-prolog/stable
-RUN apt install -y swi-prolog
-RUN apt install -y gcc python3-dev
+RUN apt-get install -y swi-prolog
+RUN apt-get install -y git gcc python3-dev
 
 WORKDIR /app
 COPY . /app