fix: OTP 28 runtime + bind 0.0.0.0 for Docker

Gleam 1.14's build image ships OTP 28, so BEAM files compiled there
won't load on the OTP 27 runtime. Bumped runtime to erlang:28-alpine.

Also added mist.bind("0.0.0.0") so the server listens on all
interfaces — required for Docker networking (was binding 127.0.0.1).

Author: BennyFranciscus

frameworks/gleam-mist/Dockerfile

@@ -6,7 +6,7 @@ RUN gleam deps download
 COPY src ./src
 RUN gleam export erlang-shipment
 
-FROM erlang:27-alpine
+FROM erlang:28-alpine
 RUN apk add --no-cache sqlite-libs
 WORKDIR /app
 COPY --from=build /app/build/erlang-shipment /app

frameworks/gleam-mist/src/httparena_gleam_mist.gleam

@@ -575,6 +575,7 @@ pub fn main() {
     }
     |> mist.new
     |> mist.port(8080)
+    |> mist.bind("0.0.0.0")
     |> mist.start
 
   process.sleep_forever()