fix(docker): npm install instead of npm ci (package-lock.json is gitignored, absent in CI)

Author: luisleo526

docker/Dockerfile

@@ -5,11 +5,13 @@
 #
 # Build: docker build -f docker/Dockerfile -t pineforge-codegen-mcp .
 
-# --- build MCP dist + prod deps (lockfile present → npm ci) ---
+# --- build MCP dist + prod deps ---
+# package-lock.json is gitignored in this repo, so CI checkouts don't have it
+# and `npm ci` can't run. Use `npm install` against package.json alone.
 FROM node:22-slim AS mcp
 WORKDIR /app
-COPY package.json package-lock.json ./
-RUN npm ci --no-audit --no-fund
+COPY package.json ./
+RUN npm install --no-audit --no-fund
 COPY . .
 RUN npm run build && npm prune --omit=dev