keep certificates if already created in older run

Dockerfile

@@ -2,7 +2,6 @@ FROM richarvey/nginx-php-fpm:latest
 ENV PHP_UPLOAD_MAX_FILESIZE 10000
 ENV PHP_POST_MAX_SIZE 10000
 ENV PHP_MEM_LIMIT 10000
-ENV RUN_SCRIPTS 1
 
 ARG HOSTIP
 ENV HOSTIP=${HOSTIP}
@@ -12,6 +11,7 @@ RUN curl -JLO "https://dl.filippo.io/mkcert/latest?for=linux/amd64"
 RUN chmod +x mkcert-v*-linux-amd64
 RUN cp mkcert-v*-linux-amd64 /usr/local/bin/mkcert
 
+VOLUME /etc/nginx/ssl
 WORKDIR /var/www/html
 RUN mkdir -p /var/www/html/uploads
 COPY nginx.conf /etc/nginx/

start.sh

@@ -1,6 +1,13 @@
 cd /etc/nginx/ssl
-mkcert -install
-mkcert localhost ${HOSTIP}
+# if localhost+1.pem do not already exist, create them
+if [ -f "/etc/nginx/ssl/localhost+1.pem" ]; then
+  echo "SSL certificate already exists"
+else
+  mkcert -install
+  cp /root/.local/share/mkcert/rootCA.pem /var/www/html/uploads/rootCA.pem
+  echo "You find the rootCA.pem in the uploads folder"
+  mkcert localhost ${HOSTIP}
+fi
 
 # Start the server
 /start.sh