--- title: Running npm in a Separate Container when using Claude description: A practical workflow for running npm inside a temporary Docker container when using Claude Code in an isolated container environment. Rather than installing... canonical: https://daily.dev/posts/running-npm-in-a-separate-container-when-using-claude-mkh8cerap twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Running npm in a Separate Container when using Claude | daily.dev og:description: A practical workflow for running npm inside a temporary Docker container when using Claude Code in an isolated container environment. Rather than installing... og:url: https://daily.dev/posts/running-npm-in-a-separate-container-when-using-claude-mkh8cerap og:image: https://api.daily.dev/og/posts/MKh8CeRAP.png og:image:alt: Running npm in a Separate Container when using Claude og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Running npm in a Separate Container when using Claude **[No Dogma Blog \(Bryan Hogan\)](https://daily.dev/sources/bryanhogan)** · 2 min read · 1 upvotes · 0 comments ## Summary A practical workflow for running npm inside a temporary Docker container when using Claude Code in an isolated container environment. Rather than installing Node/npm on the host machine or inside the Claude container, a separate Alpine container is spun up with the same bind mounts, npm is installed and used to generate a package-lock.json, and then the container is discarded. The approach generalizes to any tool you need temporarily without polluting your environment. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I generate a package-lock.json file without installing Node and npm on my host machine or in my Claude Code container? Spin up a separate, disposable container with the same bind mounts as the Claude container, install Node and npm there, run npm install to generate package-lock.json, then discard the container. For example: docker run -it --rm --mount type=bind,source=/path,target=/root/dev alpine, then apk add nodejs npm inside it. The generated file persists in the mounted directory after the container is removed. _daily.dev surfaces practical container isolation tricks like this for developers securing their Claude Code workflows._ ## Similar posts on daily.dev - [Claude Code in a Container](https://daily.dev/posts/claude-code-in-a-container-9dgvwm5jt) · No Dogma Blog \(Bryan Hogan\) · 0 upvotes · 0 comments - [How to Containerize a Node.js Application with Docker and Deploy with GitHub Actions](https://daily.dev/posts/how-to-containerize-a-node-js-application-with-docker-and-deploy-with-github-actions-ndb3pz7zw) · freeCodeCamp · 1 upvotes · 0 comments - [Running Claude Code dangerously \(safely\)](https://daily.dev/posts/running-claude-code-dangerously-safely--x5fcrbw5r) · Hacker News · 1 upvotes · 0 comments - [I gave Claude Code its own disposable computer, and stopped caring what it installed](https://daily.dev/posts/i-gave-claude-code-its-own-disposable-computer-and-stopped-caring-what-it-installed-iqddqhras) · XDA Developers · 2 upvotes · 1 comments - [I Built a Claude Code Skill That Turns Any Existing Web App Into a Local Vibe Coding Environment](https://daily.dev/posts/i-built-a-claude-code-skill-that-turns-any-existing-web-app-into-a-local-vibe-coding-environment-gs4kx8e7g) · Medium · 2 upvotes · 0 comments --- Tags: [#nodejs](https://daily.dev/tags/nodejs), [#docker](https://daily.dev/tags/docker), [#containers](https://daily.dev/tags/containers), [#claude-code](https://daily.dev/tags/claude-code), [#npm](https://daily.dev/tags/npm) [View this post on daily.dev](https://daily.dev/posts/running-npm-in-a-separate-container-when-using-claude-mkh8cerap) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Running npm in a Separate Container when using Claude","url":"https://daily.dev/posts/running-npm-in-a-separate-container-when-using-claude-mkh8cerap","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/running-npm-in-a-separate-container-when-using-claude-mkh8cerap"},"datePublished":"2026-07-24T20:17:41.461Z","dateModified":"2026-09-14T06:14:29.296Z","description":"A practical workflow for running npm inside a temporary Docker container when using Claude Code in an isolated container environment. 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