Dockerfile:
FROM nginx:latest
RUN rm -rf /etc/nginx/conf.d/default.conf && \
echo \
'server {\n\
listen 80;\n\
server_name localhost;\n\
root /usr/share/nginx/html;\n\
\n\
location / {\n\
index index.html index.htm;\n\
}\n\
}\n '\
>> /etc/nginx/conf.d/default.conf