Update logs setup.

Add clean dockers env.
Fix Dockerfile with the latest step.

main.py

@@ -1,3 +1,5 @@
+from logging import INFO
+
 from blender.version import BlenderVersion
 from blender.docker import BlenderDocker
 
@@ -9,7 +11,7 @@ if __name__ == "__main__":
     version = BlenderVersion(input("Give the blender version (X.Y.Z): "))
 
     print(f"Build a blender version {version}.")
-    docker = BlenderDocker(version)
+    docker = BlenderDocker(blender=version, severity=INFO)
     docker.build()
     
     print('Test your image.')