Created Running docker container with non-root user (markdown)

Running-docker-container-with-non-root-user.md

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+By default `mprasil/bitwarden` is using root user to run service inside the container. There are few things you need to set to run the container as non-root user if you wish to do so:
+
+1. Make sure that the directory, you're mounting inside the container will be writable by the user. For example if you decide to run as `nobody`, the directory needs to be writable by user with id 65534. For other ways to specify user inside the container, see the [docker documentation](https://docs.docker.com/engine/reference/run/#user), in our examples here we will use `nobody`.
+
+```bash
+# Make the directory on the host, change this to you preferred path
+sudo mkdir /bw-data
+
+# Set the owner using user id. 
+# Note that the ownership must match user in /etc/passwd *inside* the container, not on your host
+sudo chown 65534 /bw-data
+
+# Give the owner full rights to the folder
+sudo chmod u+rwx /bw-data
+```
+
+2. Start the container with proper parameters. Define the user and make sure to start with port set to `1024` or higher.
+
+```bash
+docker run -d \
+  --name bitwarden \
+  --user nobody \
+  -e ROCKET_PORT=1024 \
+  -v /bw-data/:/data/ \
+  -p 80:1024 \
+  mprasil/bitwarden:latest
+```
+
+Notice that the port mapping (`-p 80:1024`) reflects the `ROCKET_PORT` setting.