dokku port fixes

Dockerfile

@@ -146,4 +146,5 @@ LABEL org.opencontainers.image.vendor="APRS.me" \
     security.privileged="false"
 
 # Container configuration is handled by Dokku
-EXPOSE $PORT
+# Port is set dynamically by Dokku via PORT environment variable
+EXPOSE 5000

config/runtime.exs

@@ -16,8 +16,12 @@ import Config
 #
 # Alternatively, you can use `mix phx.gen.release` to generate a `bin/server`
 # script that automatically sets the env var above.
-if System.get_env("PHX_SERVER") do
+# Always start the server in production/docker environments
+if System.get_env("PHX_SERVER") || config_env() == :prod do
   config :aprs, AprsWeb.Endpoint, server: true
+  IO.puts("Phoenix server enabled - will start HTTP listener")
+else
+  IO.puts("Phoenix server disabled - no HTTP listener will start")
 end
 
 if config_env() == :prod do
@@ -44,6 +48,7 @@ if config_env() == :prod do
 
   host = System.get_env("PHX_HOST") || "example.com"
   port = String.to_integer(System.get_env("PORT") || "4000")
+  IO.puts("Phoenix will bind to port: #{port}")
 
   config :aprs, Aprs.Repo,
     # ssl: true,
@@ -61,7 +66,10 @@ if config_env() == :prod do
       ip: {0, 0, 0, 0},
       port: port
     ],
-    secret_key_base: secret_key_base
+    secret_key_base: secret_key_base,
+    server: true
+
+  IO.puts("Phoenix endpoint configured for host: #{host}, port: #{port}")
 
   # config :aprs, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")