• 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.