Fixed based on PR

docker/Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.8
 WORKDIR /wlan-testing
-RUN apt update && apt install vim -y && rm -rf /var/lib/apt/lists/*
+RUN apt update && rm -rf /var/lib/apt/lists/*
 RUN pip3 install pytest==6.2.2 bs4 paramiko xlsxwriter requests pandas influxdb scp allure-pytest
 RUN mkdir ~/.pip
 RUN echo "[global]" > ~/.pip/pip.conf

docker/README.md

@@ -4,7 +4,7 @@
 
 From the root directory of this repository (wlan-testing) run the following command:
 ```bash
-docker build -f ./docker/Dockerfile -t wlantest
+docker build -f ./docker/Dockerfile -t wlantest .
 ```
 This will produce a docker image, which you can verify by running docker images command.