Docker 服务正在运行时，Docker 客户端无法连接到 Docker 守护进程

问题描述 投票：0回答：1

我正在运行一个 Dockerfile，它（应该）为不同的包运行 docker-compose.yml 文件，但当前返回错误。

命令

docker-compose -f /home/kasm-default-profile/Project-main/docker-compose.yml up -d --build

失败，因为 Docker 客户端无法连接到 Docker 守护进程。

这是我的 Dockerfile：

FROM kasmweb/core-ubuntu-jammy:1.15.0
USER root

ENV HOME /home/kasm-default-profile
ENV STARTUPDIR /dockerstartup
ENV INST_SCRIPTS $STARTUPDIR/install
WORKDIR $HOME

######### Customize Container Here ###########

#get updates, install python 3.8, pip, unzip and docker's prerequisites && systemd installed#
RUN apt-get update
RUN apt-get upgrade -y
RUN apt-get install software-properties-common
RUN apt-add-repository ppa:deadsnakes/ppa -y
RUN apt-get update
RUN apt-get install -y python3.10 python3-pip ca-certificates curl unzip systemd
RUN install -m 0755 -d /etc/apt/keyrings
RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
RUN chmod a+r /etc/apt/keyrings/docker.asc

#run the command to add the repo to the Apt sources#
RUN echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
RUN sudo apt-get update

#installs docker#
RUN sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
RUN sudo apt-get update  
RUN sudo service docker start
RUN sudo /etc/init.d/docker start

#takes the Project zip, unzips it in container and runs docker compose#
COPY ./Project-main.zip /home/kasm-default-profile/
RUN unzip /home/kasm-default-profile/Project-main.zip
RUN rm /home/kasm-default-profile/Project-main.zip

RUN sudo apt-get install docker-compose -y
RUN docker-compose -f /home/kasm-default-profile/Project-main/docker-compose.yml up -d --build

######### End Customizations ###########

RUN chown 1000:0 $HOME
RUN $STARTUPDIR/set_user_permission.sh $HOME

ENV HOME /home/kasm-user
WORKDIR $HOME
RUN mkdir -p $HOME && chown -R 1000:0 $HOME

USER 1000

这是它返回的完整错误：

> [22/29] RUN docker-compose -f /home/kasm-default-profile/Project-main/docker-compose.yml up -d --build:

0.525 Traceback (most recent call last):

0.525   File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 700, in urlopen

0.525     httplib_response = self._make_request(

0.525   File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 395, in _make_request

0.525     conn.request(method, url, **httplib_request_kw)

0.525   File "/usr/lib/python3.10/http/client.py", line 1283, in request

0.525     self._send_request(method, url, body, headers, encode_chunked)

0.525   File "/usr/lib/python3.10/http/client.py", line 1329, in _send_request

0.525     self.endheaders(body, encode_chunked=encode_chunked)

0.525   File "/usr/lib/python3.10/http/client.py", line 1278, in endheaders

0.525     self._send_output(message_body, encode_chunked=encode_chunked)

0.525   File "/usr/lib/python3.10/http/client.py", line 1038, in _send_output

0.525     self.send(msg)

0.525   File "/usr/lib/python3.10/http/client.py", line 976, in send

0.526     self.connect()

0.526   File "/usr/lib/python3/dist-packages/docker/transport/unixconn.py", line 30, in connect

0.526     sock.connect(self.unix_socket)

0.526 FileNotFoundError: [Errno 2] No such file or directory

0.526

0.526 During handling of the above exception, another exception occurred:

0.526

0.526 Traceback (most recent call last):

0.526   File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send

0.526     resp = conn.urlopen(

0.526   File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 756, in urlopen

0.526     retries = retries.increment(

0.526   File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 532, in increment

0.526     raise six.reraise(type(error), error, _stacktrace)

0.526   File "/usr/lib/python3/dist-packages/six.py", line 718, in reraise

0.526     raise value.with_traceback(tb)

0.526   File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 700, in urlopen

0.526     httplib_response = self._make_request(

0.526   File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 395, in _make_request

0.527     conn.request(method, url, **httplib_request_kw)

0.527   File "/usr/lib/python3.10/http/client.py", line 1283, in request

0.527     self._send_request(method, url, body, headers, encode_chunked)

0.527   File "/usr/lib/python3.10/http/client.py", line 1329, in _send_request

0.527     self.endheaders(body, encode_chunked=encode_chunked)

0.527   File "/usr/lib/python3.10/http/client.py", line 1278, in endheaders

0.527     self._send_output(message_body, encode_chunked=encode_chunked)

0.527   File "/usr/lib/python3.10/http/client.py", line 1038, in _send_output

0.528     self.send(msg)

0.528   File "/usr/lib/python3.10/http/client.py", line 976, in send

0.528     self.connect()

0.528   File "/usr/lib/python3/dist-packages/docker/transport/unixconn.py", line 30, in connect

0.528     sock.connect(self.unix_socket)

0.528 urllib3.exceptions.ProtocolError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

0.528

0.528 During handling of the above exception, another exception occurred:

0.528

0.528 Traceback (most recent call last):

0.528   File "/usr/lib/python3/dist-packages/docker/api/client.py", line 214, in _retrieve_server_version

0.528     return self.version(api_version=False)["ApiVersion"]

0.528   File "/usr/lib/python3/dist-packages/docker/api/daemon.py", line 181, in version

0.528     return self._result(self._get(url), json=True)

0.528   File "/usr/lib/python3/dist-packages/docker/utils/decorators.py", line 46, in inner

0.528     return f(self, *args, **kwargs)

0.528   File "/usr/lib/python3/dist-packages/docker/api/client.py", line 237, in _get

0.528     return self.get(url, **self._set_request_timeout(kwargs))

0.528   File "/usr/lib/python3/dist-packages/requests/sessions.py", line 557, in get

0.528     return self.request('GET', url, **kwargs)

0.528   File "/usr/lib/python3/dist-packages/requests/sessions.py", line 544, in request

0.529     resp = self.send(prep, **send_kwargs)

0.529   File "/usr/lib/python3/dist-packages/requests/sessions.py", line 657, in send

0.529     r = adapter.send(request, **kwargs)

0.529   File "/usr/lib/python3/dist-packages/requests/adapters.py", line 498, in send

0.529     raise ConnectionError(err, request=request)

0.529 requests.exceptions.ConnectionError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

0.529

0.529 During handling of the above exception, another exception occurred:

0.529

0.529 Traceback (most recent call last):

0.529   File "/usr/bin/docker-compose", line 33, in <module>

0.529     sys.exit(load_entry_point('docker-compose==1.29.2', 'console_scripts', 'docker-compose')())

0.529   File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 81, in main

0.529     command_func()

0.529   File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 200, in perform_command

0.529     project = project_from_options('.', options)

0.529   File "/usr/lib/python3/dist-packages/compose/cli/command.py", line 60, in project_from_options

0.529     return get_project(

0.529   File "/usr/lib/python3/dist-packages/compose/cli/command.py", line 152, in get_project

0.529     client = get_client(

0.529   File "/usr/lib/python3/dist-packages/compose/cli/docker_client.py", line 41, in get_client

0.529     client = docker_client(

0.529   File "/usr/lib/python3/dist-packages/compose/cli/docker_client.py", line 170, in docker_client

0.530     client = APIClient(use_ssh_client=not use_paramiko_ssh, **kwargs)

0.530   File "/usr/lib/python3/dist-packages/docker/api/client.py", line 197, in __init__

0.530     self._version = self._retrieve_server_version()

0.530   File "/usr/lib/python3/dist-packages/docker/api/client.py", line 221, in _retrieve_server_version

0.530     raise DockerException(

0.530 docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

------

Dockerfile:44

--------------------

  42 |

  43 |     RUN sudo apt-get install docker-compose -y

  44 | >>> RUN docker-compose -f /home/kasm-default-profile/Project-main/docker-compose.yml up -d --build

--------------------

ERROR: failed to solve: process "/bin/sh -c docker-compose -f /home/kasm-default-profile/Project-main/docker-compose.yml up -d --build" did not complete successfully: exit code: 1

错误追溯到python源代码文件，我的项目需要使用python3.8，我已经指定了，但它有时会提到python3.10，这让我很困惑。

任何帮助将不胜感激，提前谢谢您。

docker docker-compose dockerfile docker-image
1个回答
0
投票

您无法按照您的设想运行此 Dockerfile。

这里最重要的问题是图像根本无法持续运行程序。 当您尝试 

RUN service docker start
时，这可能会成功，也可能不会成功 – 
service
通常在 Docker 中根本不起作用，并且 Docker 守护进程通常需要超出容器中允许的权限提升权限 – 但 Docker 守护进程已关闭在 
RUN
命令的末尾。 当您执行 
RUN docker-compose ...
命令时，Docker 守护进程不再运行，这是您收到的具体错误。

同样，即使您可以 

RUN docker-compose up
，这也会启动嵌入进程的容器，一旦 
RUN
命令完成，这些进程将再次退出。

这不是“调整此权限”问题：此 Dockerfile 无法运行。 您需要获得一个正在运行的 Docker 守护进程，然后单独运行 

docker compose up
命令。 通常，如果您需要某种服务器，您会在单独的容器中运行它，但现在您又回到了需要 Docker 和 Compose 的境地，以便启动容器来运行 Docker 和 Compose。

我可能不会打扰任何这些机器。 您本质上需要一个 Docker 守护进程或类似的守护进程（Kubernetes 运行时、Podman 等）来运行此容器，因此您无法通过在容器中运行第二个 Docker 守护进程来避免主机依赖性。 Compose 已经足够广泛，我认为它是像 Docker 一样的基本依赖项。 我只是解压并直接运行它。

# on the host system, not in a container
unzip Project-main.zip
cd Project-main
docker compose up -d --build

如果您计划在其他地方运行此程序，则需要复制 

docker-compose.yml
文件，但通常不需要复制应用程序源的其余部分。

如果出于某种原因您确实想要一个能够启动整个应用程序的镜像，那么Docker Hub 

docker
镜像会包含 Compose。 原则上，您可以构建一个以 
FROM docker
开头并嵌入 Compose 文件的映像；例如

FROM ubuntu AS unpack
WORKDIR /app
COPY Project-main.zip ./
RUN unzip Project-main.zip

FROM docker
COPY --from=unpack /app/Project-main /app
WORKDIR /app
ENTRYPOINT ["docker", "compose"]
CMD ["up", "-d"]

要运行它，您需要将主机的 Docker 套接字绑定挂载到容器中。 但原则上您不需要 

docker-compose.yml
文件，因为它已构建到图像中。

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock \
  project-compose
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock \
  project-compose down
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