def f(a=5, b=10):
print(f"a={a}, b={b}")
f()
a=5, b=10
f(1, 2)
a=1, b=2
d = {'a': 5}
f(**d)
a=5, b=10
pos_args = (1, 2)
f(*pos_args)
a=1, b=2
f(**d)
a=5, b=10
f(a=1, b=2)
a=1, b=2
f(**dict(a=1, b=2))
a=1, b=2
build_kwargs = Dict(...)
..
docker.build(..., **build_kwargs)