add Dockerfile

Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:latest
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get -y install apt-utils sudo
+RUN useradd -m testuser && echo "testuser:testuser" | chpasswd && adduser testuser sudo
+RUN echo "testuser ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/testuser
+
+USER testuser
+CMD /bin/bash
+WORKDIR /home/testuser