nginx default config file is fully commented with explanations

srcs/requirements/nginx/Dockerfile

@@ -4,8 +4,14 @@ RUN apt update && apt install -y nginx
 
 COPY ./conf/nginx.conf /etc/nginx/
 COPY ./conf/inception_nginx.conf /etc/nginx/conf.d/
+
+# for test
 COPY ./conf/index.html /data/www/
 COPY ./conf/salade.jpeg /data/images/
 
 CMD [ "nginx", "-g", "daemon off;" ]
 
+
+# -g 'daemon off' :
+# daemon off, to avoid the main process of nginx to quit after creating its childs, and therefore make docker exit
+# https://stackoverflow.com/questions/18861300/how-to-run-nginx-within-a-docker-container-without-halting