Bump dotnet/sdk from 8.0-alpine to 9.0-alpine in /src/backend/WebApi (#…

…362)

Bumps dotnet/sdk from 8.0-alpine to 9.0-alpine.


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src/backend/WebApi/Dockerfile

@@ -5,7 +5,7 @@ ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0-alpine AS build
 WORKDIR /src
 COPY ["WebApi/WebApi.csproj", "WebApi/"]
 COPY ["Directory.Build.props", "./"]