FROM docker:20.10-dind

# Switch to Debian-based image for better .NET support
RUN apk add --no-cache bash curl gnupg

# Install .NET 8 SDK
ENV DOTNET_VERSION=8.0

RUN curl -sSL https://dotnet.microsoft.com/download/dotnet/scripts/v1/dotnet-install.sh -o dotnet-install.sh \
    && chmod +x dotnet-install.sh \
    && ./dotnet-install.sh --version $DOTNET_VERSION --install-dir /usr/share/dotnet \
    && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet

# Verify installation
RUN dotnet --version

# Optional: install other tools
RUN apk add --no-cache git make vim go

USER root