add nextcloud setup

other/nextcloud_setup.sh

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+apt install vim
+apt install nginx
+apt install php-fpm php-pgsql php-gd php-mbstring php-zip php-soap
+apt install postgresql
+apt install certbot
+
+# configure postgres (via su postgres/psql)
+create user nextcloud with password 'PASSWORD';
+create database nextcloud  with owner nextcloud;
+
+# configure nginx
+
+# configure ssl
+# include acme block in enabled/default
+location /.well-known/acme-challenge/ {
+    alias /var/www/.well-known/acme-challenge/;
+}
+systemctl reload nginx
+
+mkdir -p /var/www/.well-known/acme-challenge/;
+chown -R www-data /var/www/.well-known/
+certbot certonly --webroot -w /var/www -d cloudtest.atlantishq.de --rsa-key-size 2048 --expand
+# enable ssl in nginx now (in default server)
+listen 443 ssl http2;
+ssl_certificate     /etc/letsencrypt/live/cloudtest.atlantishq.de/fullchain.pem;
+ssl_certificate_key /etc/letsencrypt/live/cloudtest.atlantishq.de/privkey.pem;
+# delete everything but server name and the stuff you added
+systemctl restart nginx
+
+# download nextcloud https://nextcloud.com/install/#instructions-server
+cd /var/www/
+wget https://download.nextcloud.com/server/releases/nextcloud-19.0.0.zip
+unzip nextcloud-19.0.0.zip
+chown -R www-data nextcloud
+# head to https://docs.nextcloud.com/server/15/admin_manual/installation/nginx.html and add the relevant nginx config, dont foget to fix 301->302 and servernames etc
+# correctly set the php handler (i.e. unix:/run/php/php7.3-fpm.sock;)
+systemctl restart nginx