Fix Docker build/runtime: 0.0.0.0 bind, npm ci, HTTP-mirror fallback

Issues found bringing the stack up locally and fixed:
- Server was loopback-only inside the container (appsettings "Urls=localhost"
  wins over ASPNETCORE_URLS) → published port returned "empty reply". Force the
  bind with command-line args: ENTRYPOINT dotnet Hokm.Server.dll --urls 0.0.0.0:5005.
- Web image: npm install crashed on alpine ("Exit handler never called"); root
  cause was UNABLE_TO_GET_ISSUER_CERT_LOCALLY — the Nexus mirror serves a partial
  chain that Node's CA bundle can't complete. Use npm ci + strict-ssl=false.
- .NET restore hit the same partial chain (NU1301 PartialChain). Both registries
  are now build ARGs (NUGET_INDEX / NPM_REGISTRY) defaulting to the HTTPS mirror
  (CI runner trusts it); local .env overrides to the plain-HTTP Nexus
  (http://171.22.25.73:8081) which has no TLS. NuGet feed is generated inline with
  allowInsecureConnections so .NET 10 accepts the HTTP source.

Verified on local Docker (Postgres-backed): db+server+web all healthy; API + web
reachable from host on 1505/1500; auth → profile (1000 coins) → friend add/accept
(bidirectional) → chat (unread) all 200; rows persisted in Postgres
(Profiles=2, Friends=2, Messages=1).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Dockerfile

@@ -1,11 +1,19 @@
 # Barg-e Vasat web (Next.js 16 static export → nginx)
 # The app is output:"export" (fully client-side), so we build the static `out/`
 # and serve it with nginx. NEXT_PUBLIC_* are baked at build time.
+# npm ci (deterministic, installs the exact musl optional binaries from the
+# lockfile) — `npm install` crashes here ("Exit handler never called") resolving
+# Next SWC + Tailwind v4 native deps.
 FROM mirror.soroushasadi.com/node:20-alpine AS build
 WORKDIR /app
 COPY package*.json ./
-RUN npm install --legacy-peer-deps --ignore-scripts \
-      --registry https://mirror.soroushasadi.com/repository/npm-group/
+# npm registry. Default = HTTPS Nexus (CI runner trusts the cert). Override with
+# NPM_REGISTRY=http://<nexus-ip>:8081/repository/npm-group/ for hosts whose trust
+# store lacks the mirror's intermediate (PartialChain) — e.g. local Docker Desktop.
+# strict-ssl=false also tolerates the partial chain when HTTPS is used.
+ARG NPM_REGISTRY=https://mirror.soroushasadi.com/repository/npm-group/
+RUN npm ci --legacy-peer-deps --strict-ssl=false --no-audit --no-fund \
+      --registry "${NPM_REGISTRY}"
 COPY . .
 # Live mode + the API origin the BROWSER will use (host-mapped port / LAN IP).
 ARG NEXT_PUBLIC_USE_SERVER=1