chore: update readme with deployment instructions

README.md

@@ -57,15 +57,32 @@ Require authentication for certain uploads
 | NO_AUTH_LARGE_FILE_MAX_TIME |               |
 | NO_AUTH_LARGE_FILE_SIZE     |               |
 
-## compiling
+## Deploying using Docker
+
+```sh
+# Clone the repository
+git clone https://git.ctdo.de/neri/datatrash
+cd datatrash
+# Copy and update the docker-compose.yml
+cp docker-compose.yml.sample docker-compose.yml
+$EDITOR docker-compose.yml
+# Start the container
+docker-compose up -d
+```
+
+## Compiling the binary
+
+When you have a [rust toolchain](https://rustup.rs/) installed:
 
 ```sh
 cargo build --release
 ```
 
-or
+or when you have docker installed:
 
 ```sh
 docker build -t datatrash .
-docker cp datatrash:/home/rust/.cargo/bin/datatrash datatrash
+id=$(docker create datatrash)
+docker cp $id:/opt/datatrash/datatrash datatrash
+docker rm -v $id
 ```