there is a map with a marker, and the docker don't generate a new certificate all the time

srcs/requirements/nginx/Dockerfile

@@ -16,10 +16,15 @@ COPY ./conf/inception_nginx.conf /etc/nginx/http.d/
 RUN adduser -S www-data && \
 	adduser www-data www-data
 
-RUN mkdir -p /var/www/html
-
 ARG WP_URL
 ARG MAX_UPLOAD_SIZE
+ARG WP_VOLUME_DIR
+ARG WP_VOLUME_PLUGINS
+ARG NG_VOLUME_CERTS
+
+# create and empty volumes dir
+RUN mkdir -p ${WP_VOLUME_DIR}   ${WP_VOLUME_PLUGINS}   ${NG_VOLUME_CERTS} && \
+	rm -rf   ${WP_VOLUME_DIR}/* ${WP_VOLUME_PLUGINS}/* ${NG_VOLUME_CERTS}/*
 
 # replace WP_URL
 RUN sed -i "s/\${WP_URL}/${WP_URL}/g" /etc/nginx/http.d/inception_nginx.conf
@@ -27,18 +32,15 @@ RUN sed -i "s/\${WP_URL}/${WP_URL}/g" /etc/nginx/http.d/inception_nginx.conf
 # replace max file size upload
 RUN sed -i "s/\(client_max_body_size \).*\(m;\)/\1${MAX_UPLOAD_SIZE}\2/g" /etc/nginx/nginx.conf
 
-# empty /var/www/html folder to avoid it to rewrite volume
-#RUN rm -rf /var/www/html/*
-
-# personalized index.html
-COPY ./conf/index.html /data/www/
-
 # create ssl certificate
-RUN mkdir -p /etc/ssl/private /etc/ssl/certs
-RUN openssl req -newkey rsa:2048 -nodes -x509 -days 365 \
-	-subj "/C=fr/ST=ile-de-france/L=paris/O=42/OU=inception/CN=${WP_URL}" \
-	-keyout /etc/ssl/private/${WP_URL}.key \
-	-out /etc/ssl/certs/${WP_URL}.crt
+COPY ./conf/ssl ${NG_VOLUME_CERTS}
+RUN if [ -z "$(ls -A ${NG_VOLUME_CERTS} 2>/dev/null)" ]; then \
+		mkdir ${NG_VOLUME_CERTS}/private ${NG_VOLUME_CERTS}/certs; \
+		openssl req -newkey rsa:2048 -nodes -x509 -days 365 \
+			-subj "/C=fr/ST=ile-de-france/L=paris/O=42/OU=inception/CN=${WP_URL}" \
+			-keyout ${NG_VOLUME_CERTS}/private/${WP_URL}.key \
+			-out ${NG_VOLUME_CERTS}/certs/${WP_URL}.crt; \
+	fi
 
 ENTRYPOINT [ "nginx", "-g", "daemon off;" ]