Fix formatting and add updating section to readme

README.md

@@ -26,14 +26,19 @@ the Gitea release tab. Here I'm going to assume the latter.
 
 3. Load the image
 
+```
 	sudo docker load -i treebird-latest.tar.gz
+```
 
 4. Add an unprivileged treebrid user and group to the host (this is needed to avoid uid/gid conflicts)
 
+```
 	sudo useradd -r -s /bin/false -c 'Treebird FE user' -U treebird
+```
 
 5. Run the container as below to start in daemon mode (`-d`) on port 4008 as user:group treebird:treebird
 
+```
 	docker run \
 	    --rm \
 	    --name treebird \
@@ -49,19 +54,25 @@ the Gitea release tab. Here I'm going to assume the latter.
 	# To have it auto start on reboot you need to either add to your init system
 	# or manage with a docker wrapper like docker-compose or etc.
 	# TODO: instructions
+```
 
 6. Add a web folder for the static files
 
+```
 	sudo mkdir -p /var/www/treebird
 	sudo chmod a+r /var/www/treebird
+```
 
 7. Extract static files to web folder
 
+```
 	tar -xzf treebird-static-latest.tar.gz
 	sudo cp -r treebird-latest/* /var/www/treebird
+```
 
 8. Setup your Nginx Configuration (other servers idk for now)
 
+```
 	# In case the folders do not exist yet, do the following
 	sudo mkdir -p /etc/nginx/sites-{available,enabled}
 
@@ -77,9 +88,49 @@ the Gitea release tab. Here I'm going to assume the latter.
 
 	# Start nginx
 	sudo systemctl start nginx
+```
 
 It should now be running on the domain you configured.
 
+## Updating
+This is process is similar to the install, but without the need for config changes.
+
+1. Download the latest tarballs from the release tab again.
+
+2. Stop the running container and remove the old image
+
+```
+	docker stop treebird
+	docker rmi treebird:latest
+```
+
+3. Load the new one
+
+```
+	docker load -i treebird-latest-HASH.tar.gz
+```
+
+4. Start the container again
+
+```
+	docker run \
+	    --rm \
+	    --name treebird \
+	    -p 127.0.0.1:4008:4008 \
+		-u "`id -u treebird`:`id -g treebird`" \
+	    -e TREEBIRD_CFG_INSTANCE_URL="https://my.instance.domain/" \
+	    -d "treebird:latest"
+```
+
+5. Extract and update static files
+
+```
+	tar -xzf treebird-static-files-HASH.tar.gz
+	sudo cp -rf treebird-latest/* /var/www/treebird
+```
+
+Your install should now be running and up to date
+
 ## Building
 Building the container should be as simple as running `build_container.sh` and
 waiting for the build to complete.