some fixes

Signed-off-by: ale <ale@manalejandro.com>

CONTRIBUTING.md

@@ -52,7 +52,7 @@ By participating in this project, you agree to maintain a respectful and inclusi
 
 - Python 3.10 or later
 - GTK 4.0 and libadwaita 1.0
-- Docker (for model testing)
+- Docker Engine from official Docker repository (for model testing)
 
 ### Setting Up
 
@@ -61,6 +61,24 @@ By participating in this project, you agree to maintain a respectful and inclusi
 git clone https://github.com/YOUR_USERNAME/debai.git
 cd debai
 
+# Install Docker Engine from official repository (if not already installed)
+# Add Docker's official GPG key
+sudo apt-get update
+sudo apt-get install ca-certificates curl
+sudo install -m 0755 -d /etc/apt/keyrings
+sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+sudo chmod a+r /etc/apt/keyrings/docker.asc
+
+# Add the repository to Apt sources
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
+  $(. /etc/os-release && echo \"$VERSION_CODENAME\") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+sudo apt-get update
+
+# Install Docker Engine
+sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+
 # Create virtual environment
 python3 -m venv venv
 source venv/bin/activate