Merge pull request #10 from pellcorp/jp_dev_docs

fix typo in apt add repository line

DEVELOPMENT.md

@@ -97,7 +97,7 @@ https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository
 2. `sudo install -m 0755 -d /etc/apt/keyrings`
 3. `curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg`
 4. `sudo chmod a+r /etc/apt/keyrings/docker.gpg`
-3. `echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null`
+3. `echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null`
 4. `sudo apt-get update`
 5. `sudo apt-get install docker-ce docker-compose docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin`
 6. `sudo usermod -a -G docker $USER`