feat: Add dotnet6 (#16)

dotnet/6/Dockerfile

@@ -0,0 +1,21 @@
+FROM        --platform=$BUILDPLATFORM ghcr.io/parkervcp/yolks:debian
+
+LABEL       author="Torsten Widmann" maintainer="info@goover.de"
+
+ENV         DEBIAN_FRONTEND noninteractive
+
+RUN         apt update -y \
+            && apt upgrade -y \
+            && apt install -y apt-transport-https wget iproute2 \
+            && wget https://packages.microsoft.com/config/debian/10/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
+            && dpkg -i packages-microsoft-prod.deb \
+            && rm packages-microsoft-prod.deb \
+            && apt update -y \
+            && apt install -y aspnetcore-runtime-6.0 libgdiplus
+
+USER        container
+ENV         USER=container HOME=/home/container
+WORKDIR     /home/container
+
+COPY        ./../entrypoint.sh /entrypoint.sh
+CMD         [ "/bin/bash", "/entrypoint.sh" ]