**问题：**我用Shiny server pro和docker容器化了一个shiny应用，类似这里：https://support.rstudio.com/hc/en-us/articles/360009986893-Shiny-Server-Pro-with-Docker
**问题：**如何在运行时将环境变量传递给docker容器，以便这些环境变量可以在应用中使用（下面的示例应用）。

使用的docker命令是：docker run -it --rm -p 3838:3838 -e env_variable_interest=testname <shiny_image>，即变量env_variable_interest未在Shiny服务器中显示/识别/传输。
非常感谢您的评论！

library(shiny)

ui <- fluidPage(

    # Application title
    titlePanel("Old Faithful Geyser Data"),

    # Sidebar with a slider input for number of bins 
    sidebarLayout(
        sidebarPanel(
            sliderInput("bins",
                        "Number of bins:",
                        min = 1,
                        max = 50,
                        value = 30)
        ),

        # Show a plot of the generated distribution
        mainPanel(
           plotOutput("distPlot")
        ))
)

server <- function(input, output) {

    output$distPlot <- renderPlot({
        # generate bins based on input$bins from ui.R
        x    <- faithful[, 2]
        bins <- seq(min(x), max(x), length.out = input$bins + 1)

        hist(x, breaks = bins, col = 'darkgray', border = 'white', main = Sys.getenv("env_variable_interest"))
    })
}

# Run the application 
shinyApp(ui = ui, server = server)

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