add setup file for ubuntu builder

setup/setup-ubuntu_builder.sh

@@ -0,0 +1,25 @@
+# 2 : 46
+# 3 : 28
+# 4 : 05
+# Add Docker's official GPG key:
+sudo apt-get update
+sudo apt-get install -y ca-certificates curl gnupg
+sudo install -m 0755 -d /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+sudo chmod a+r /etc/apt/keyrings/docker.gpg
+
+# Add the repository to Apt sources:
+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
+sudo apt-get update
+
+# Install git and docker
+sudo apt-get install -y git docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+
+# Docker post install steps
+sudo groupadd docker
+sudo usermod -aG docker $USER
+
+docker pull sofaframework/sofabuilder_ubuntu:builders_transition