fix: compile C NIF explicitly in Docker build

Add explicit 'make' step in Dockerfile to compile the C NIF before
Elixir compilation. This ensures towerops_nif.so exists when the
Elixir code tries to load it.

The custom compiler task creates a bootstrap problem (needs to be
compiled before it can be used as a compiler), so we compile the
C NIF explicitly instead of relying on the compilers list.

Dockerfile

@@ -65,6 +65,9 @@ COPY priv priv
 
 COPY c_src c_src
 
+# Compile the C NIF before Elixir compilation
+RUN cd c_src && make
+
 COPY lib lib
 
 # Compile the release

mix.exs

@@ -10,7 +10,7 @@ defmodule Towerops.MixProject do
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
       deps: deps(),
-      compilers: [:towerops_nif, :phoenix_live_view] ++ Mix.compilers(),
+      compilers: [:phoenix_live_view] ++ Mix.compilers(),
       listeners: [Phoenix.CodeReloader],
       dialyzer: dialyzer()
     ]