fix(docker): include pnpm-workspace and npmrc in builder context

The committed lockfile records overrides from pnpm-workspace.yaml. With the
narrower manifest COPY, pnpm install --frozen-lockfile ran without the
workspace file and failed with ERR_PNPM_LOCKFILE_CONFIG_MISMATCH in CI.
Copy package.json, pnpm-lock, pnpm-workspace and .npmrc together so the
override config present in the lockfile is also supplied at install time.

Dockerfile

@@ -9,7 +9,10 @@ ENV NEXT_TELEMETRY_DISABLED=1
 # install only needs to exist as a bootstrap and follows the active major.
 RUN apk add --no-cache git \
     && npm install -g pnpm@latest
-COPY package.json pnpm-lock.yaml* ./
+# pnpm-workspace.yaml + .npmrc must be present too: the lockfile records the
+# overrides from pnpm-workspace.yaml, and --frozen-lockfile rejects a build
+# where the workspace config is absent (ERR_PNPM_LOCKFILE_CONFIG_MISMATCH).
+COPY package.json pnpm-lock.yaml* pnpm-workspace.yaml* .npmrc* ./
 # pnpm fetch: download all deps into $PNPM_STORE first, so only the lockfile
 # change (not source changes) invalidates the network-heavy download layer.
 RUN pnpm fetch --ignore-scripts