Question

已经构建了一个dockerfile，docker中的映像大小约为预期的13,7 gb。但是，如果我“泊坞窗保存”图像，它会变成26 GB的文件？这怎么可能？我想保存它，以便另一台docker计算机可以加载它并从中创建容器。

# escape=`

FROM microsoft/dotnet-framework

SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]

# Install .NET Core
ENV DOTNET_VERSION 2.1.2

RUN Invoke-WebRequest -OutFile dotnet.zip https://dotnetcli.blob.core.windows.net/dotnet/Runtime/$Env:DOTNET_VERSION/dotnet-runtime-$Env:DOTNET_VERSION-win-x64.zip; `
    $dotnet_sha512 = '9e67c62feb34aeb52a45d0e623d1ad098637a322545956eb5e6de2287ddad2412b766c492ae5a7dddc123a4cb47cfc51d9bb10d0e30c007ec3fc90666f9733c8'; `
    if ((Get-FileHash dotnet.zip -Algorithm sha512).Hash -ne $dotnet_sha512) { `
        Write-Host 'CHECKSUM VERIFICATION FAILED!'; `
        exit 1; `
    }; `
    `
    Expand-Archive dotnet.zip -DestinationPath $Env:ProgramFiles\dotnet; `
    Remove-Item -Force dotnet.zip

RUN setx /M PATH $($Env:PATH + ';' + $Env:ProgramFiles + '\dotnet')

# Configure Kestrel web server to bind to port 80 when present
ENV ASPNETCORE_URLS=http://+:80 `
# Enable detection of running in a container
DOTNET_RUNNING_IN_CONTAINER=true

WORKDIR /app
COPY /app .

ENTRYPOINT & "/app/web.exe"

Docker保存的映像大小是列表大小的两倍

0 个答案: