add caddy setup 64bit

caddysetup.md

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+https://pimylifeup.com/raspberry-pi-caddy-web-server/
+
+```
+sudo apt update
+sudo apt upgrade
+```
+
+```
+sudo apt remove apache2
+```
+
+```
+sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https
+curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo tee /etc/apt/trusted.gpg.d/caddy-stable.asc
+curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
+sudo apt update
+sudo apt install caddy
+```
+
+```
+$ wget https://github.com/caddyserver/caddy/releases/download/v2.6.1/caddy_2.6.1_linux_arm64.tar.gz -O caddy.tar.gz
+
+$ mkdir caddy && tar -zxvf caddy.tar.gz -C caddy
+
+$ cd caddy
+$ mv caddy_linux_arm7 caddy
+```
+
+```
+sudo mkdir /etc/caddy
+
+sudo nano /etc/caddy/Caddyfile
+```
+
+```
+$ sudo setcap CAP_NET_BIND_SERVICE=+eip ./caddy
+```
+
+install/update acme client
+
+```
+$ sudo apt-get install certbot
+```
+
+to check acme version
+
+install the script
+
+```
+$ curl https://get.acme.sh | sh
+```
+
+!!!! run service
+
+```
+$ sudo ./caddy run --config Caddyfile
+```

swapfile.md

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+# Change swap file size
+
+https://cloudolife.com/2021/01/01/Raspberry-Pi/Resizing-or-disable-Swap-Size/#:~:text=Raspberry%20Pi%20Swap%20Size,-Users%20who%20stake&text=However%20in%20most%20cases%20Raspbian,size%20should%20be%20100%20MB.&text=%23%20Generally%2C%20when%20the%20memory%20is,should%20be%20twice%20the%20memory.
+
+```
+$ free -m
+              total        used        free      shared  buff/cache   available
+Mem:            924         287         107          23         530         652
+Swap:           100           1          99
+```
+
+```
+$ nano /etc/dphys-swapfile
+```
+
+```
+# /etc/dphys-swapfile - user settings for dphys-swapfile package
+# author Neil Franklin, last modification 2010.05.05
+# copyright ETH Zuerich Physics Departement
+#   use under either modified/non-advertising BSD or GPL license
+
+# this file is sourced with . so full normal sh syntax applies
+
+# the default settings are added as commented out CONF_*=* lines
+
+
+# where we want the swapfile to be, this is the default
+#CONF_SWAPFILE=/var/swap
+
+# set size to absolute value, leaving empty (default) then uses computed value
+#   you most likely don't want this, unless you have an special disk situation
+# CONF_SWAPSIZE=100
+
+# Generally, when the memory is less than 2G, the swap partition should be twice the memory.
+CONF_SWAPSIZE=2048
+
+# set size to computed value, this times RAM size, dynamically adapts,
+#   guarantees that there is enough swap without wasting disk space on excess
+#CONF_SWAPFACTOR=2
+
+# restrict size (computed and absolute!) to maximally this limit
+#   can be set to empty for no limit, but beware of filled partitions!
+#   this is/was a (outdated?) 32bit kernel limit (in MBytes), do not overrun it
+#   but is also sensible on 64bit to prevent filling /var or even / partition
+#CONF_MAXSWAP=2048
+```
+
+```
+sudo /etc/init.d/dphys-swapfile restart
+[....] Restarting dphys-swapfile (via systemctl): dphys-swapfile.service
+
+```