使用下面的命令可以释放 docker 产生的无用的空间。
docker builder prune -a
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$ docker help builder prune
Usage: docker builder prune
Remove build cache
Options:
-a, --all Remove all unused build cache, not just dangling ones
--filter filter Provide filter values (e.g. "until=24h")
-f, --force Do not prompt for confirmation
--keep-storage bytes Amount of disk space to keep for cache
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docker image prune -a
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$ docker help image prune
Usage: docker image prune [OPTIONS]
Remove unused images
Options:
-a, --all Remove all unused images, not just dangling ones
--filter filter Provide filter values (e.g. "until=<timestamp>")
-f, --force Do not prompt for confirmation
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docker volume prune -a
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$ docker help volume prune
Usage: docker volume prune [OPTIONS]
Remove unused local volumes
Options:
-a, --all Remove all unused volumes, not just anonymous ones
--filter filter Provide filter values (e.g. "label=<label>")
-f, --force Do not prompt for confirmation
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docker network prune - 清理未使用的网络（注意：包含 stop 状态容器相关的网络，慎用）