Update Dockerfile

Added user creation in dev env

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Dockerfile

@@ -14,6 +14,9 @@ COPY . .
 FROM base AS development
 ARG ENVIRONMENT=development
 ENV NODE_ENV=$ENVIRONMENT
+RUN addgroup -S appuser && adduser -S appuser -G appuser
+RUN chown -R appuser:appuser /app
+USER appuser
 EXPOSE 3000
 CMD ["npm", "run", "dev"]