Building in docker on M1

[kristoferB]

When I build minimal example in docker on my Mac mini M1 I get:

error[E0308]: mismatched types
   --> /root/.cargo/git/checkouts/r2r-c48e5652e9219d1b/e4dcb4d/rcl/src/lib.rs:126:62
    |
126 |                     unsafe { std::ptr::copy(values.as_ptr(), self.data, values.len()); }
    |                                                              ^^^^^^^^^ expected `f64`, found `u128`
...
144 | primitive_sequence!(rosidl_runtime_c__long_double, f64);
    | -------------------------------------------------------- in this macro invocation
    |
    = note: expected raw pointer `*mut f64`
               found raw pointer `*mut u128`
    = note: this error originates in the macro `primitive_sequence` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0308]: mismatched types
   --> /root/.cargo/git/checkouts/r2r-c48e5652e9219d1b/e4dcb4d/rcl/src/lib.rs:133:21
    |
129 |                 pub fn to_vec(&self) -> Vec<$element_type> {
    |                                         ------------------ expected `Vec<f64>` because of return type
...
133 |                     target
    |                     ^^^^^^ expected `f64`, found `u128`
...
144 | primitive_sequence!(rosidl_runtime_c__long_double, f64);
    | -------------------------------------------------------- in this macro invocation
    |
    = note: expected struct `Vec<f64>`
               found struct `Vec<u128>`
    = note: this error originates in the macro `primitive_sequence` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.
error: could not compile `rcl`

To replicate on M1 Mac:

docker run -it --rm kristoferb/spbase_ros2:galactic
root@f7ca0c8e3b3d:/# git clone https://github.com/m-dahl/r2r_minimal_node.git
root@f7ca0c8e3b3d:/# cd r2r_minimal_node/
root@f7ca0c8e3b3d:/r2r_minimal_node# colcon build