11 |     
  12 |     COPY src src
  13 | >>> RUN cargo build --release
  14 |     
  15 |     FROM alpine:3.21
--------------------
ERROR: failed to solve: process "/bin/sh -c cargo build --release" did not complete successfully: exit code: 101
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1

   |                                                   ^^^^ use of undeclared crate or module `libc`

Some errors have detailed explanations: E0433, E0599, E0615.
For more information about an error, try `rustc --explain E0433`.
warning: `tun1` (bin "tun1") generated 2 warnings
error: could not compile `tun1` (bin "tun1") due to 8 previous errors; 2 warnings emitted
The command '/bin/sh -c cargo build --release' returned a non-zero code: 101
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 101