First draft Virtualization presentation

src/slides/compsoc/7_virtualization.md

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+title   = "Virtualization"
+date    = 2024-04-17
+slides  = true
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+
+# Virtual Machines (and more)
+-------------------------------------------------------------------------
+###
+-------------------------------------------------------------------------
+so what is a virtual machine???
+-------------------------------------------------------------------------
+basically you run another smaller computer in your computer
+<br>
+\*insert inception joke here\*
+-------------------------------------------------------------------------
+### Why would you want this?
+-------------------------------------------------------------------------
+- You can run multiple OSes on one machine
+- You can run software that might not be compatible with your main OS
+- It's helpful for testing and setting up a new OS
+- VMs are used **A LOT** in those big server rooms and professional environments
+-------------------------------------------------------------------------
+### How do I do this on my own laptop then?
+-------------------------------------------------------------------------
+there's a lot of *virtualization* software out there, but we'll be using VirtualBox today
+<br>
+It's free, and it's pretty easy to use
+<br>
+you can download it [here](https://www.virtualbox.org/wiki/Downloads)
+-------------------------------------------------------------------------
+if you already know all of this just wait we have more stuff after this
+-------------------------------------------------------------------------
+when you open VirtualBox, create a new VM like this:
+
+<img src="7_virtualization/new-vm.png" alt="Create a new VM" width="400px" height="300px"></img>
+-------------------------------------------------------------------------
+then choose a name and select the image to use for the OS
+
+<img src="7_virtualization/select-image.png" alt="Choose an image" width="400px" height="300px"></img>
+
+I'll be using Ubuntu 24.04, if you want to use another linux distro you probably know how to do this already
+-------------------------------------------------------------------------
+now, select how much memory and CPU you want to allocate to the new VM
+
+<img src="7_virtualization/memory-cpu.png" alt="Allocate memory and CPU" width="400px" height="300px"></img>
+
+The defaults you get are fine for this demo
+-------------------------------------------------------------------------
+and finally, choose how much storage you want to give the VM
+
+<img src="7_virtualization/storage.png" alt="Allocate storage" width="400px" height="300px"></img>
+
+10GB is enough for now, you can use more if you want
+-------------------------------------------------------------------------
+### Click "Finish" and now you got your new VM!!
+-------------------------------------------------------------------------
+we still need to install the operating system but that's easy enough
+-------------------------------------------------------------------------
+\*live demo in progress\*
+-------------------------------------------------------------------------
+### Now on to the next part (it gets better)
+-------------------------------------------------------------------------
+you probably saw how many resources it takes to run a VM
+-------------------------------------------------------------------------
+what if I want to only run a single app without all the overhead??
+-------------------------------------------------------------------------
+### Containers to the rescue!!
+-------------------------------------------------------------------------
+containers are kind of like VMs, but much lighter
+-------------------------------------------------------------------------
+instead of emulating an entire computer, they just run the OS
+-------------------------------------------------------------------------
+### Why use VMs then?
+-------------------------------------------------------------------------
+- VMs are more secure
+- they're more isolated from the host system
+- not limited to running the same OS as the host
+-------------------------------------------------------------------------
+### How do I use containers?
+-------------------------------------------------------------------------
+one of the most popular container platforms is Docker
+-------------------------------------------------------------------------
+rn we will use it on the VM we just created
+-------------------------------------------------------------------------
+the commands we will need to install Docker:
+<br>
+``curl -fsSL https://get.docker.com -o get-docker.sh``
+<br>
+``sudo sh get-docker.sh``
+-------------------------------------------------------------------------