Correct mirror hostname to soroushasadi.com, HTTP protocol

Previous commit introduced a typo (soroushasad vs soroushasadi).
All references now use:
  npm    -> http://mirror.soroushasadi.com/repository/npm-group/
  docker -> mirror.soroushasadi.com/repository/docker-group/  (no protocol in image refs)

Also restore Dockerfile ARG NPM_TOKEN + COPY .npmrc that were lost
when the soroush-cicd skill regenerated the file, and set the
NODE_IMAGE ARG default back to the mirror path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -1,10 +1,10 @@
 # All base images flow through the Nexus docker-group proxy, which aggregates
 # Docker Hub, Microsoft Container Registry (mcr.microsoft.com) and GitHub
 # Container Registry (ghcr.io) behind one path — any upstream image is reachable
-# as mirror.soroushasad.com/repository/docker-group/<image>.
+# as mirror.soroushasadi.com/repository/docker-group/<image>.
 # Build directly against Docker Hub instead with:
 #   --build-arg NODE_IMAGE=node:20-slim
-ARG NODE_IMAGE=node:20-slim
+ARG NODE_IMAGE=mirror.soroushasadi.com/repository/docker-group/node:20-slim
 # ---------------------------------------------------------------------------
 # 1. Dependencies — installs node_modules and compiles the better-sqlite3
 #    native addon (needs python3 + a C++ toolchain).
@@ -15,11 +15,11 @@ RUN apt-get update \
   && apt-get install -y --no-install-recommends python3 make g++ ca-certificates \
   && rm -rf /var/lib/apt/lists/*
 # .npmrc points npm at the Nexus npm-group; NPM_TOKEN (optional) authenticates.
-# The token is written only into this build stage and never reaches the runner
-# image, which copies node_modules — not .npmrc.
-COPY package.json package-lock.json ./
+# The token is appended at build time only — never reaches the runner image.
+ARG NPM_TOKEN=""
+COPY package.json package-lock.json .npmrc ./
 RUN if [ -n "$NPM_TOKEN" ]; then \
-      echo "//mirror.soroushasad.com/repository/npm-group/:_authToken=${NPM_TOKEN}" >> .npmrc ; \
+      echo "//mirror.soroushasadi.com/repository/npm-group/:_authToken=${NPM_TOKEN}" >> .npmrc ; \
     fi \
   && npm ci