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89e98eefa0
Move to the development track of `containerd` not the legacy 0.2 branch. The commands have changed a bit. This does increase the image size as we are bundling the Docker copy and our copy, and the new one is larger as it is growing features. Hopefully Docker will shrink eventually. Also we may replace `ctr` with a library. Fix #1029 Signed-off-by: Justin Cormack <justin.cormack@docker.com>
28 lines
982 B
Markdown
28 lines
982 B
Markdown
## Using the system containerd
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Here is a simple example script that will run a container using the system containerd.
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You should run it from `/var` as the root filesystem is in RAM, and will use up memory.
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```bash
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#!/bin/sh
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NAME=nginx
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VERSION=latest
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docker pull ${NAME}:${VERSION}
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CONTAINER=$(docker create --net=host --security-opt apparmor=unconfined --cap-drop all --cap-add net_bind_service --oom-score-adj=-500 -v /var/log/nginx:/var/log/nginx -v /var/cache/nginx:/var/cache/nginx -v /var/run:/var/run ${NAME}:${VERSION})
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docker run -v ${PWD}:/conf -v /var/run/docker.sock:/var/run/docker.sock --rm jess/riddler -f -bundle /conf ${CONTAINER}
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rm -rf rootfs && mkdir rootfs
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docker export ${CONTAINER} | tar -C rootfs -xf -
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docker rm ${CONTAINER}
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mkdir -p /var/log/nginx /var/cache/nginx
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ctr run --bundle . ${NAME}
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ctr list
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```
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For production, you will want to create the `config.json` offline and bundle it in with your
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init script, but you can create the rootfs online.
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