Install docker cli using apt

shell-executor/Dockerfile

@@ -2,7 +2,7 @@ FROM node:14
 
 RUN apt-get update 
 
-RUN apt-get install rsync build-essential wget -y
+RUN apt-get install rsync build-essential wget docker-ce-cli -y
 
 # Install gitlab runner
 RUN wget -O /usr/local/bin/gitlab-runner https://gitlab-runner-downloads.s3.amazonaws.com/latest/binaries/gitlab-runner-linux-amd64
@@ -21,8 +21,6 @@ RUN curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -
 RUN chmod +x ./kubectl
 RUN mv ./kubectl /usr/bin/kubectl
 
-RUN curl -sSL https://get.docker.com/ | sh
-
 WORKDIR /app
 
 COPY ./start.sh /app/start.sh