(Dockerfile): Fix editting hosts file

We need to append rather than overwrite to prevent possible issues.

Signed-off-by: Victor Otieno <victor@slick.co.ke>

Author: vickz84259

Dockerfile

@@ -29,4 +29,4 @@ RUN apt-get update -y \
     && apt reinstall fonts-noto-color-emoji
 
 # Edit /etc/hosts
-RUN echo -e "127.0.0.1 localtest.me\n::1 localtest.me" > /etc/hosts
+RUN echo -e "127.0.0.1 localtest.me\n::1 localtest.me" >> /etc/hosts