colaboratory上でdockerを動かす"docker-in-colab"を試す

udocker("run hello-world")

udocker("ps")

udocker("run --help")

user@pc$ udocker run --help

        run: execute a container
        run [options] <container-id-or-name>
        run [options] <repo/image:tag>
        --rm                       :delete container upon exit
        --workdir=/home/userXX     :working directory set to /home/userXX
        --user=userXX              :run as userXX
        --user=root                :run as root
        --volume=/data:/mnt        :mount host directory /data in /mnt
        --novol=/proc              :remove /proc from list of volumes to mount
        --env="MYTAG=xxx"          :set environment variable
        --env-file=<file>          :read environment variables from file
        --hostauth                 :get user account and group from host
        --containerauth            :use container passwd and group directly
        --nosysdirs                :do not bind the host /proc /sys /run /dev
        --nometa                   :ignore container metadata
        --dri                      :bind directories relevant for dri graphics
        --hostenv                  :pass the host environment to the container
        --cpuset-cpus=<1,2,3-4>    :CPUs in which to allow execution
        --name=<container-name>    :set or change the name of the container
        --bindhome                 :bind the home directory into the container
        --kernel=<kernel-id>       :simulate this Linux kernel version
        --device=/dev/xxx          :pass device to container (R1 mode only)
        --location=<container-dir> :use container outside the repository
        --nobanner                 :don't print a startup banner
        --entrypoint               :override the container metadata entrypoint
        --platform=os/arch         :pull image for OS and architecture
        --pull=<when>              :when to pull (missing|never|always)

        Only available in Rn execution modes:
        --device=/dev/xxx          :pass device to container (R1 mode only)

        Only available in Pn execution modes:
        --publish=<hport:cport>    :map container TCP/IP <cport> into <hport>
        --publish-all              :bind and connect to random ports

        run <container-id-or-name> executes an existing container, previously
        created from an image by using: create <repo/image:tag>

        run <repo/image:tag> always creates a new container from the image
        if needed the image is pulled. This is slow and may waste storage.

udocker("run -p 30080:80 --name nginx nginx")

user@pc$ udocker run -p 30080:80 --name nginx nginx
Info: downloading layer sha256:92b11f67642b62bbb98e7e49169c346b30e20cd3c1c034d31087e46924b9312e
Info: downloading layer sha256:33952c5995320e59a81112f411bfb02e097562a72c12e85828da51132ace47cd
Info: downloading layer sha256:c5cdd1ce752da415a6563d9432e1ee718b2f4ba353ee2bb7c8ce2aa78d5b4ee1
Info: downloading layer sha256:87c3fb37cbf2f763f67f3b270aa0785ca05a2caedac399b4bfeedfd0ccd77d87
Info: downloading layer sha256:035788421403127b57e688a82706198331f06545a955b526f89f2bf53f52b078
Info: downloading layer sha256:39fc875bd2b2e4f867e8e5cc5ad43bd5d6650ddeaf8c28b04f374f7fbca085f3
Info: downloading layer sha256:e78b137be3552e1f36d84cb01c533a23febe4c48f6fcdff5d5b26a45a636053b
Info: downloading layer sha256:8a1e25ce7c4f75e372e9884f8f7b1bedcfe4a7a7d452eb4b0a1c7477c9a90345
Warning: this container exposes TCP/IP ports
 
 ****************************************************************************** 
 *                                                                            * 
 *               STARTING 66fe70ba-f104-3015-bb19-28cbd5abf8bd                * 
 *                                                                            * 
 ****************************************************************************** 
 executing: docker-entrypoint.sh
/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
nginx: [alert] could not open error log file: open() "/var/log/nginx/error.log" failed (13: Permission denied)
2024/03/24 12:36:10 [emerg] 1573#1573: open() "/var/log/nginx/error.log" failed (13: Permission denied)

udocker("ps")

user@pc$ udocker ps
CONTAINER ID                         P M NAMES              IMAGE               
66fe70ba-f104-3015-bb19-28cbd5abf8bd . W ['nginx']          nginx:latest        

!curl localhost:30080

curl: (7) Failed to connect to localhost port 30080 after 0 ms: Connection refused

!ss -tan | grep 30080