minor setup script and jellyfin installation

jellyfin.sh

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+# Get a Docker image, a pre-defined and configured application.
+docker pull jellyfin:jellyfin
+
+# Create virtual persistent partitions to store information for Jellyfin
+docker volume create jellyfin-config
+docker volume create jellyfin-cache
+
+# Start a Docker container with the Jellyfin image.
+docker run -d \
+ --name jellyfin \
+ --user 1000:1000 \
+ --net=host \
+ --volume jellyfin-config:/config \
+ --volume jellyfin-cache:/cache \
+ --mount type=bind,source=/home/jellypi/media,target=/media \
+ --restart=unless-stopped \
+ jellyfin/jellyfin

setup.sh

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+# Add the repository to install cloudflared.
+curl -L https://pkg.cloudflare.com/cloudflare-main.gpg | sudo tee /usr/share/keyrings/cloudflare-archive-keyring.gpg >/dev/null
+echo "deb [signed-by=/usr/share/keyrings/cloudflare-archive-keyring.gpg] https://pkg.cloudflare.com/cloudflared $(lsb_release -cs) main" | sudo tee  /etc/apt/sources.list.d/cloudflared.list
+
+# Add the repository to install Docker.
+sudo apt-get install ca-certificates curl
+sudo install -m 0755 -d /etc/apt/keyrings
+sudo curl -fsSL https://download.docker.com/linux/raspbian/gpg -o /etc/apt/keyrings/docker.asc
+sudo chmod a+r /etc/apt/keyrings/docker.asc
+
+# Add the repository to Apt sources:
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/raspbian \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+
+# Update the repository of available packages (applications and software utilities) and upgrade all packages. This will take a while.
+sudo apt update && sudo apt upgrade;
+
+# Install some basic applications and utilities.
+# - tldr: a helpful and concise utility for explaining commands, with examples.
+#
+# - tmux: a terminal multiplexer, allowing you to have multiple panes of a terminal
+# open at the same time.
+#
+# - neovim: a text editor. Alternatively (and pre-installed) use nano.
+#
+# - cloudflared: a utility used to securely expose processes to the internet.
+#
+# - docker: a utility used for quickly, easily, and securely deploying pre-built applications.
+sudo apt install tldr tmux neovim cloudflared docker;
+
+# Systemctl is a tool used to manage underlying system processes, called daemons. Enable will start the docker
+# daemon at startup, and start starts the daemon now.
+sudo systemctl enable docker;
+
+restart;