added Podman

Tools/Podman.md

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+# Podman
+Podman is a container system very similar to docker that lets you run programs in an isolated and self-contained environment. A number of programs, usually those with Web Interfaces can be run with podman.
+
+Podman is built to be a drop-in replacement for Docker, so if you see something that can be run with docker, you can usually just replace "docker" with "podman" and it will work. 
+
+Podman has 2 main advantages over Docker:
+1. Due to licensing podman is easier to install on Linux, since it is just packaged as normal software.
+2. Podman is setup to run without root permissions by default, which generally makes it more secure, and means a user does not need root permissions on their system to use it.
+
+## Install
+Podman can be installed by the package manager on your system:
+
+### Arch-Based:
+Select `crun` if asked
+```sh
+sudo pacman -S podman
+```
+
+### Debian/Mint/Ubuntu
+```sh
+sudo apt install podman
+```
+
+### Fedora
+```sh
+sudo dnf install podman
+```
+
+## Run a container
+A container is simply run with the `podman run` command.
+
+For example, to run the simple debian container from the Docker Hub (https://hub.docker.com/_/debian), you would run the following:
+```sh
+podman run docker.io/library/debian:latest
+```
+
+You man want to expose ports from inside the container onto your computer (so the port can be accessed from outside the container), for example if there is a webserver running in that container you could expose port 80 to port 80 on your computer by adding `-p 80:80` like so:
+
+```sh
+podman run -p 80:80 docker.io/library/debian:latest
+```
+
+### DockerFile
+
+More commonly projects will provide a DockerFile, which you can just download, when in the directory with that file just run `podman run` and it will use the information from that file.
+
+### Compose
+You may also see compose files provided for docker projects, for that you will probably need to install the separate `podman-compose` package, and then `podman-compose` can just be used in place of `docker compose` or `docker-compose`. 
+
+For example, being in a directory with a compose file, you can run `podman-compose up` to start the program.
+
+## Manage Containers
+### View running containers
+You can see all running podman containers with 
+```sh
+podman ps
+```
+
+You can additionally view all containers (including stopped) with
+```sh
+podman ps -a
+```
+
+### Stop a container
+After running `podman ps` you can see a container's id, and you can use that id to control it. 
+
+For example you can stop it with
+```sh
+podman stop <id> 
+```
+
+### Delete a container
+You can also delete a stopped container with
+```sh
+podman rm <id>
+```