fix: add docker group and assign node user

Author: grantfitzsimmons

Dockerfile

@@ -59,4 +59,6 @@ COPY --from=builder /home/node/app/node_modules ./node_modules
 COPY --from=builder /home/node/app/package.json ./package.json
 COPY --from=builder /home/node/app/.env.local ./.env.local
 
+RUN groupadd -g 999 docker && usermod -aG docker node
+
 CMD ["npm", "run", "start"]