mirror of
https://github.com/imjasonh/node-image
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38 lines
1.3 KiB
Markdown
38 lines
1.3 KiB
Markdown
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# Dockerless builds for npm
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This demonstrates a simple Node.js app that is built into a container image and pushed to a registry without needing Docker.
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## Usage
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Set the `DOCKER_REPO` env var to a Docker/OCI repository you have push access to.
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```
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export DOCKER_REPO=gcr.io/my-project/test
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```
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```
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$ npm run image
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...
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gcr.io/my-project/test/node-image-test@sha256:cdef7514faa3efb8e71ad96e27da2592464e2673babdde095eb1ab68ad5ff200
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```
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You can `docker run` the image directly, with `--silent`:
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```
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$ docker run $(npm run --silent image)
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...
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Unable to find image 'gcr.io/my-project/test/node-image-test@sha256:cdef7514faa3efb8e71ad96e27da2592464e2673babdde095eb1ab68ad5ff200' locally
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...
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Status: Downloaded newer image for gcr.io/my-project/test/node-image-test@sha256:cdef7514faa3efb8e71ad96e27da2592464e2673babdde095eb1ab68ad5ff200
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hello
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```
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By default the base image is `node:alpine`.
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You can select a different base image with the `BASE` env var, e.g., `BASE=node:buster npm run image`
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## Caveats
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- ⚠️ This runs `npm install` in your developer environment -- not in a container -- and malicious build scripts in dependencies can wreck your environment! Vet your dependencies.
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- This only supports `linux/amd64` for now. If this becomes a real thing I image it would support multi-arch builds fairly easily. Maybe even Windows?!
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