feat: update README.md

README.md

@@ -1,39 +1,47 @@
 # Cartesi Machine Emulator Tools
 
-The Cartesi Machine Emulator Tools a repository that contains a set of tools developed for the RISC-V Linux OS.
+The Cartesi Machine Emulator Tools is a repository that contains a set of tools developed for the RISC-V Linux OS. It provides a RISC-V Debian package and a root filesystem for Ubuntu 22.04.
 
 ## Getting Started
 
-Users looking to create cartesi-machine applications can use the artifact directly, no need to build this repository themselves. Also check the `example/` folder for the details.
+Users looking to create cartesi-machine applications can use the provided Debian package and root filesystem directly, without needing to build this repository themselves.
 
 ### Requirements
 
 - Docker >= 18.x
 - GNU Make >= 3.81
+- bsdtar >= 3.7.2
+- xgenext2fs >= 1.5.3
 
 ### Docker buildx setup
 
+To set up riscv64 buildx, use the following command:
+
 ```bash
 $ make setup
 ```
 
 ### Building
 
-A `make` invocation will download the dependencies if they are not present, build the ubuntu sdk, all tools and finally create the `machine-emulator-tools-$VERSION.tar.gz` artifact.
+Invoking make will build all tools and create the `machine-emulator-tools-$VERSION.deb` Debian package along with the `rootfs-tools-$VERSION.ext2` root filesystem artifacts.
 
 ```bash
 $ make
 ```
 
 #### Makefile targets
 
-The following options are available as `make` targets:
-
-- **tgz**: create "machine-emulator-tools.tar.gz"
-- **setup**: setup riscv64 buildx
-- **setup-required**: check if riscv64 buildx setup is required
-- **clean**: clean generated artifacts
-- **help**: list makefile targets
+The following commands are available as `make` targets:
+
+- **all**: Build Debian package and rootfs (Default)
+- **deb**: Build machine-emulator-tools.deb package
+- **fs**: Build rootfs.ext2
+- **setup**: Setup riscv64 buildx
+- **setup-required**: Check if riscv64 buildx setup is required
+- **help**: List Makefile commands
+- **env**: Print useful Makefile variables as a KEY=VALUE list
+- **clean**: Remove the generated artifacts
+- **distclean**: Clean and remove dependencie
 
 ## Contributing