• I am using Windows to build a Linux container with Visual Studio 2017


• I make a change to site.css in my ASP.Net Core web app, and a minor textual change to the home page to show the app current version.


• I build and debug my docker image locally: SUCCESS (I see the changes)


• I push my image to docker hub: SUCCESS!


• I update my kubernetes deployment to pull the new image from docker hub: SUCCESS (I see the new image pulled, and I see the version change on the home page)


• FAIL: I don't see the css changes!

If I open up the Chrome dev toolbar, it does not appear to be getting the right site.css - I can tell this by inspecting the elements - they have some other css being applied, not mine!
If I view source, it is referencing the minified version of the css file:

<link rel="stylesheet" href="/css/site.min.css?v=kHvJwvVAK1eJLN4w8xygUR3nbvlLmRwi5yr-OuAO90E" />

Here is the OOB Dockerfile from Visual Studio:

FROM microsoft/aspnetcore:2.0 AS base

WORKDIR /app

EXPOSE 80



FROM microsoft/aspnetcore-build:2.0 AS build

WORKDIR /src

COPY SupportTicket.sln ./

COPY ST.Web/ST.Web.csproj ST.Web/

COPY ST.AppServicesLib/ST.AppServicesLib.csproj ST.AppServicesLib/

COPY ST.SharedInterfacesLib/ST.SharedInterfacesLib.csproj ST.SharedInterfacesLib/

COPY ST.SharedEntitiesLib/ST.SharedEntitiesLib.csproj ST.SharedEntitiesLib/

COPY ST.SQlServerRepoLib/ST.SQLServerRepoLib.csproj ST.SQlServerRepoLib/

RUN dotnet restore -nowarn:msb3202,nu1503

COPY . .

WORKDIR /src/ST.Web

RUN dotnet build -c Release -o /app



FROM build AS publish

RUN dotnet publish -c Release -o /app



FROM base AS final

WORKDIR /app

COPY --from=publish /app .

ENTRYPOINT ["dotnet", "ST.Web.dll"]

Question

If I can view the website correctly with a debug build, why is it not appearing correctly in the pushed image? (I expect the images to be identical)
How do I fix this?

Many Thanks!

Preliminary answer (this is a workaround, and I would still like to get an answer on the central question as to why the debug website container != the deployed container):

Comment out the minifier configuration in bundleconfig.json. This got it working for me. (But now I don't have any minification!):

// Configure bundling and minification for the project.

// More info at https://go.microsoft.com/fwlink/?LinkId=808241

[

  //{

  //  "outputFileName": "wwwroot/css/site.min.css",

  //  // An array of relative input file paths. Globbing patterns supported

  //  "inputFiles": [

  //    "wwwroot/css/site.css"

  //  ]

  //},

  {

    "outputFileName": "wwwroot/js/site.min.js",

    "inputFiles": [

      "wwwroot/js/site.js"

    ],

    // Optionally specify minification options

    "minify": {

      "enabled": true,

      "renameLocals": true

    },

    // Optionally generate .map file

    "sourceMap": false

  }

]

Also, I commented out, and updated, the stylesheet reference in _layout.cshtml:

<environment exclude="Development">

       <!-- etc -->

        @*<link rel="stylesheet" href="~/css/site.min.css" asp-append-version="true" />*@

        <link rel="stylesheet" href="~/css/site.css" />

    </environment>

Any better answers, greatly appreciated.