chore: npm install as rocketchat user (#33726)

Co-authored-by: Diego Sampaio <chinello@gmail.com>

apps/meteor/.docker/Dockerfile.debian

@@ -30,21 +30,27 @@ ENV DEPLOY_METHOD=docker \
 
 RUN aptMark="$(apt-mark showmanual)" \
     && apt-get install -y --no-install-recommends g++ make python3 ca-certificates \
-    && cd /app/bundle/programs/server \
+    && apt-mark auto '.*' > /dev/null \
+    && apt-mark manual $aptMark > /dev/null
+
+USER rocketchat
+
+RUN cd /app/bundle/programs/server \
     && npm install \
     && cd npm/node_modules/isolated-vm \
     && npm install \
-    && apt-mark auto '.*' > /dev/null \
-    && apt-mark manual $aptMark > /dev/null \
-    && find /usr/local -type f -executable -exec ldd '{}' ';' \
+    && npm cache clear --force
+
+USER root
+
+RUN find /usr/local -type f -executable -exec ldd '{}' ';' \
     | awk '/=>/ { print $(NF-1) }' \
     | sort -u \
     | xargs -r dpkg-query --search \
     | cut -d: -f1 \
     | sort -u \
     | xargs -r apt-mark manual \
-    && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
-    && npm cache clear --force
+    && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false
 
 USER rocketchat