Dockerfile

# Written by Lance McCarthy as an example only. Use at your own risk, carefully review how you are handling your secrets and what is included in your final image.

################################## STAGE 1 ######################################
# Create our base image from the aspnet image, and prep any neccessary settings
#################################################################################
FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
# Install SkiaSharp dependencies
RUN apt-get update
RUN apt-get install libfreetype6 libfontconfig1 -y


################################## STAGE 2 ######################################
# Compile the project in a transient stage to create production-ready artifacts
#################################################################################
FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:10.0 AS build
WORKDIR /src
COPY . .
# 1. Mount the ecret and use it to add the Telerik server as a package source
RUN --mount=type=secret,id=telerik-nuget-key \
    dotnet nuget add source 'https://nuget.telerik.com/v3/index.json' -n "TelerikNuGetServer" -u "api-key" -p $(cat /run/secrets/telerik-nuget-key) --store-password-in-clear-text
# 2. Restore NuGet packages
RUN dotnet restore "MyBlazorApp.csproj"
# 3. Mount the "telerik-license-key" secret as an env var and build the project
RUN --mount=type=secret,id=telerik-license-key \
    TELERIK_LICENSE="$(cat /run/secrets/telerik-license-key)" \
    dotnet publish "MyBlazorApp.csproj" -o /app/publish /p:UseAppHost=false --self-contained false

################################## STAGE 3 ######################################
# Build the final image from the base, copying artifacts from the build stage
#################################################################################
FROM base AS final
WORKDIR /app
COPY --from=build /app/publish .
ENTRYPOINT ["dotnet", "MyBlazorApp.dll"]