首页 > 解决方案 > 如何在 Digital Ocean 液滴上运行 docker 镜像?

问题描述

我在安装了 Docker 的 Digital Ocean 上有一个基于 Ubuntu 的液滴,我从桌面上传了我的 docker image.tar 文件。我将此 image.tar 文件上传到 /home/newuser/app 目录。接下来,我使用以下命令加载了 image.tar:

sudo docker load -i image.tar

图像已加载。我检查了。

当我运行以下这些行时,我无法在连接到我的 Droplet 实例的公共 IP 上看到我的图像应用程序:

sudo docker run image

或者

sudo docker run -p 80:80 image

你们怎么处理这件事?

这是码头文件:

FROM r-base:3.5.0

# Install Ubuntu packages
RUN apt-get update && apt-get install -y \
    sudo \
    gdebi-core \
    pandoc \
    pandoc-citeproc \
    libcurl4-gnutls-dev \
    libcairo2-dev/unstable \
    libxt-dev \
    libssl-dev 


# Add shiny user
RUN groupadd  shiny \
&& useradd --gid shiny --shell /bin/bash --create-home shiny



# Download and install ShinyServer
RUN wget --no-verbose https://download3.rstudio.org/ubuntu-14.04/x86_64/shiny-server-1.5.7.907-amd64.deb && \
    gdebi shiny-server-1.5.7.907-amd64.deb


# Install R packages that are required
RUN R -e "install.packages(c('Benchmarking', 'plotly', 'DT'), repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('shiny', repos='https://cloud.r-project.org/')"

# Copy configuration files into the Docker image
COPY shiny-server.conf  /etc/shiny-server/shiny-server.conf
COPY /app /srv/shiny-server/

# Make the ShinyApp available at port 80
EXPOSE 80

# Copy further configuration files into the Docker image
COPY shiny-server.sh /usr/bin/shiny-server.sh

CMD ["/usr/bin/shiny-server.sh"]

shiny-server.conf 的代码:

# Define the user we should use when spawning R Shiny processes
run_as shiny;

# Define a top-level server which will listen on a port
server {
  # Instruct this server to listen on port 80. The app at dokku-alt need expose PORT 80, or 500 e etc. See the docs
  listen 80;

  # Define the location available at the base URL
  location / {

    # Run this location in 'site_dir' mode, which hosts the entire directory
    # tree at '/srv/shiny-server'
    site_dir /srv/shiny-server;

    # Define where we should put the log files for this location
    log_dir /var/log/shiny-server;

    # Should we list the contents of a (non-Shiny-App) directory when the user 
    # visits the corresponding URL?
    directory_index on;
  }
}

和 shiny-server.sh 的代码:

# Make sure the directory for individual app logs exists
mkdir -p /var/log/shiny-server
chown shiny.shiny /var/log/shiny-server

exec shiny-server >> /var/log/shiny-server.log 2>&1

标签: dockerdigital-ocean

解决方案


当您使用 -p 80:80 运行容器时,实际上不需要在 docker 文件中公开端口 80,除非可能是对其他人的提示:https ://forums.docker.com/t/what-is-the-在 docker-file/37726/2 中使用暴露

您可能应该发布您的 shiny-server.conf,但我敢打赌,您要么没有指定端口(在这种情况下,shiny-server 从端口 3838 开始)或 80 以外的端口。确保在配置文件中修改此行:

listen 3838

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