第一章：docker selenium 环境部署

① 下载 selenium 镜像

首先拉取 selenium/hub 镜像。

执行命令：docker pull selenium/hub

然后拉取 selenium/node-chrome 镜像。

执行命令：docker pull selenium/node-chrome

docker images 查看容器镜像。

② 容器 selenium 实例的创建与运行

创建容器实例：

docker run -d -P --name=hub selenium/hub

docker run -d -P --link=hub:hub selenium/node-chrome

查看容器实例：

docker ps

可以通过 docker start/stop 实例名 来启动停用容器实例。

一般服务器重启后，就需要来启动容器了。

③ 浏览器访问 selenium Grid

docker ps 可以查看生成的端口，通过本地 ip + 端口号 即可访问 selenium Grid 控制台。

可以看到浏览器版本相关信息。

可以看到相关配置信息。

④ docker 命令大全

docker 相关命令

docker --help
Usage:  docker [OPTIONS] COMMAND
A self-sufficient runtime for containers
Options:
      --config string      Location of client config files (default
                           "C:\\Users\\Administrator\\.docker")
  -c, --context string     Name of the context to use to connect to the
                           daemon (overrides DOCKER_HOST env var and
                           default context set with "docker context use")
  -D, --debug              Enable debug mode
  -H, --host list          Daemon socket(s) to connect to
  -l, --log-level string   Set the logging level
                           ("debug"|"info"|"warn"|"error"|"fatal")
                           (default "info")
      --tls                Use TLS; implied by --tlsverify
      --tlscacert string   Trust certs signed only by this CA (default
                           "C:\\Users\\Administrator\\.docker\\ca.pem")
      --tlscert string     Path to TLS certificate file (default
                           "C:\\Users\\Administrator\\.docker\\cert.pem")
      --tlskey string      Path to TLS key file (default
                           "C:\\Users\\Administrator\\.docker\\key.pem")
      --tlsverify          Use TLS and verify the remote
  -v, --version            Print version information and quit
Management Commands:
  builder     Manage builds
  buildx*     Build with BuildKit (Docker Inc., v0.6.3)
  compose*    Docker Compose (Docker Inc., v2.0.0)
  config      Manage Docker configs
  container   Manage containers
  context     Manage contexts
  image       Manage images
  manifest    Manage Docker image manifests and manifest lists
  network     Manage networks
  node        Manage Swarm nodes
  plugin      Manage plugins
  scan*       Docker Scan (Docker Inc., v0.8.0)
  secret      Manage Docker secrets
  service     Manage services
  stack       Manage Docker stacks
  swarm       Manage Swarm
  system      Manage Docker
  trust       Manage trust on Docker images
  volume      Manage volumes
Commands:
  attach      Attach local standard input, output, and error streams to a running container
  build       Build an image from a Dockerfile
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  diff        Inspect changes to files or directories on a container's filesystem
  events      Get real time events from the server
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  history     Show the history of an image
  images      List images
  import      Import the contents from a tarball to create a filesystem image
  info        Display system-wide information
  inspect     Return low-level information on Docker objects
  kill        Kill one or more running containers
  load        Load an image from a tar archive or STDIN
  login       Log in to a Docker registry
  logout      Log out from a Docker registry
  logs        Fetch the logs of a container
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  ps          List containers
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  rmi         Remove one or more images
  run         Run a command in a new container
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  search      Search the Docker Hub for images
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  version     Show the Docker version information
  wait        Block until one or more containers stop, then print their exit codes
Run 'docker COMMAND --help' for more information on a command.
To get more help with docker, check out our guides at https://docs.docker.com/go/guides/

docker run 相关命令

docker run --help
Usage:  docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
Run a command in a new container
Options:
      --add-host list                  Add a custom host-to-IP mapping
                                       (host:ip)
  -a, --attach list                    Attach to STDIN, STDOUT or STDERR
      --blkio-weight uint16            Block IO (relative weight),
                                       between 10 and 1000, or 0 to
                                       disable (default 0)
      --blkio-weight-device list       Block IO weight (relative device
                                       weight) (default [])
      --cap-add list                   Add Linux capabilities
      --cap-drop list                  Drop Linux capabilities
      --cgroup-parent string           Optional parent cgroup for the
                                       container
      --cgroupns string                Cgroup namespace to use
                                       (host|private)
                                       'host':    Run the container in
                                       the Docker host's cgroup namespace
                                       'private': Run the container in
                                       its own private cgroup namespace
                                       '':        Use the cgroup
                                       namespace as configured by the
                                                  default-cgroupns-mode
                                       option on the daemon (default)
      --cidfile string                 Write the container ID to the file
      --cpu-period int                 Limit CPU CFS (Completely Fair
                                       Scheduler) period
      --cpu-quota int                  Limit CPU CFS (Completely Fair
                                       Scheduler) quota
      --cpu-rt-period int              Limit CPU real-time period in
                                       microseconds
      --cpu-rt-runtime int             Limit CPU real-time runtime in
                                       microseconds
  -c, --cpu-shares int                 CPU shares (relative weight)
      --cpus decimal                   Number of CPUs
      --cpuset-cpus string             CPUs in which to allow execution
                                       (0-3, 0,1)
      --cpuset-mems string             MEMs in which to allow execution
                                       (0-3, 0,1)
  -d, --detach                         Run container in background and
                                       print container ID
      --detach-keys string             Override the key sequence for
                                       detaching a container
      --device list                    Add a host device to the container
      --device-cgroup-rule list        Add a rule to the cgroup allowed
                                       devices list
      --device-read-bps list           Limit read rate (bytes per second)
                                       from a device (default [])
      --device-read-iops list          Limit read rate (IO per second)
                                       from a device (default [])
      --device-write-bps list          Limit write rate (bytes per
                                       second) to a device (default [])
      --device-write-iops list         Limit write rate (IO per second)
                                       to a device (default [])
      --disable-content-trust          Skip image verification (default true)
      --dns list                       Set custom DNS servers
      --dns-option list                Set DNS options
      --dns-search list                Set custom DNS search domains
      --domainname string              Container NIS domain name
      --entrypoint string              Overwrite the default ENTRYPOINT
                                       of the image
  -e, --env list                       Set environment variables
      --env-file list                  Read in a file of environment variables
      --expose list                    Expose a port or a range of ports
      --gpus gpu-request               GPU devices to add to the
                                       container ('all' to pass all GPUs)
      --group-add list                 Add additional groups to join
      --health-cmd string              Command to run to check health
      --health-interval duration       Time between running the check
                                       (ms|s|m|h) (default 0s)
      --health-retries int             Consecutive failures needed to
                                       report unhealthy
      --health-start-period duration   Start period for the container to
                                       initialize before starting
                                       health-retries countdown
                                       (ms|s|m|h) (default 0s)
      --health-timeout duration        Maximum time to allow one check to
                                       run (ms|s|m|h) (default 0s)
      --help                           Print usage
  -h, --hostname string                Container host name
      --init                           Run an init inside the container
                                       that forwards signals and reaps
                                       processes
  -i, --interactive                    Keep STDIN open even if not attached
      --ip string                      IPv4 address (e.g., 172.30.100.104)
      --ip6 string                     IPv6 address (e.g., 2001:db8::33)
      --ipc string                     IPC mode to use
      --isolation string               Container isolation technology
      --kernel-memory bytes            Kernel memory limit
  -l, --label list                     Set meta data on a container
      --label-file list                Read in a line delimited file of labels
      --link list                      Add link to another container
      --link-local-ip list             Container IPv4/IPv6 link-local
                                       addresses
      --log-driver string              Logging driver for the container
      --log-opt list                   Log driver options
      --mac-address string             Container MAC address (e.g.,
                                       92:d0:c6:0a:29:33)
  -m, --memory bytes                   Memory limit
      --memory-reservation bytes       Memory soft limit
      --memory-swap bytes              Swap limit equal to memory plus
                                       swap: '-1' to enable unlimited swap
      --memory-swappiness int          Tune container memory swappiness
                                       (0 to 100) (default -1)
      --mount mount                    Attach a filesystem mount to the
                                       container
      --name string                    Assign a name to the container
      --network network                Connect a container to a network
      --network-alias list             Add network-scoped alias for the
                                       container
      --no-healthcheck                 Disable any container-specified
                                       HEALTHCHECK
      --oom-kill-disable               Disable OOM Killer
      --oom-score-adj int              Tune host's OOM preferences (-1000
                                       to 1000)
      --pid string                     PID namespace to use
      --pids-limit int                 Tune container pids limit (set -1
                                       for unlimited)
      --platform string                Set platform if server is
                                       multi-platform capable
      --privileged                     Give extended privileges to this
                                       container
  -p, --publish list                   Publish a container's port(s) to
                                       the host
  -P, --publish-all                    Publish all exposed ports to
                                       random ports
      --pull string                    Pull image before running
                                       ("always"|"missing"|"never")
                                       (default "missing")
      --read-only                      Mount the container's root
                                       filesystem as read only
      --restart string                 Restart policy to apply when a
                                       container exits (default "no")
      --rm                             Automatically remove the container
                                       when it exits
      --runtime string                 Runtime to use for this container
      --security-opt list              Security Options
      --shm-size bytes                 Size of /dev/shm
      --sig-proxy                      Proxy received signals to the
                                       process (default true)
      --stop-signal string             Signal to stop a container
                                       (default "15")
      --stop-timeout int               Timeout (in seconds) to stop a
                                       container
      --storage-opt list               Storage driver options for the
                                       container
      --sysctl map                     Sysctl options (default map[])
      --tmpfs list                     Mount a tmpfs directory
  -t, --tty                            Allocate a pseudo-TTY
      --ulimit ulimit                  Ulimit options (default [])
  -u, --user string                    Username or UID (format:
                                       <name|uid>[:<group|gid>])
      --userns string                  User namespace to use
      --uts string                     UTS namespace to use
  -v, --volume list                    Bind mount a volume
      --volume-driver string           Optional volume driver for the
                                       container
      --volumes-from list              Mount volumes from the specified
                                       container(s)
  -w, --workdir string                 Working directory inside the container

第二章：Python 调用 docker selenium 执行自动化实例演示

① 源码展示

# -*- coding: UTF8 -*-
# 2021.11.16
# 小蓝枣
# docker selenium 自动化
from selenium import webdriver
from time import sleep
driver = webdriver.Remote(
    command_executor='http://127.0.0.1:55006/wd/hub',
    desired_capabilities={'browserName': 'chrome'}
)
try:
    # 登录中国气象网查看北京天气
    driver.get('http://www.weather.com.cn/weather1d/101010100.shtml')
    sleep(3)
    # 读取天气信息
    bj_temperature = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="tem"]/*').text
    bj_wind_direction = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs w"]/span').text
    bj_wind_class = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs w"]/em').text
    bj_air_quality = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs pol"]//a').text
    bj_weather = '''
    城市：北京
    当前温度：%s
    风向：%s
    风力：%s
    空气质量：%s
    '''%(bj_temperature,bj_wind_direction,bj_wind_class,bj_air_quality)
    # 打印抓取的天气信息
    print(bj_weather)
    # 保存截图
    driver.get_screenshot_as_file("docker_selenium_run_001.png")
# 保证出错后进程正常释放
finally:
    driver.quit()