Add jellyfin Docker image

.dockerignore

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+.git

Dockerfile

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+ARG DOTNET_VERSION=2
+
+FROM microsoft/dotnet:${DOTNET_VERSION}-sdk as builder
+WORKDIR /repo
+COPY . .
+ARG CONFIGURATION=RELEASE
+RUN dotnet clean \
+ && dotnet build --configuration ${CONFIGURATION} $(pwd)/MediaBrowser.sln \
+ && dotnet publish --configuration ${CONFIGURATION} $(pwd)/MediaBrowser.sln --output /jellyfin
+
+FROM microsoft/dotnet:${DOTNET_VERSION}-runtime
+COPY --from=builder /jellyfin /jellyfin
+RUN apt update \
+ && apt install -y ffmpeg gosu
+EXPOSE 8096
+VOLUME /config /media
+ENV PUID=1000 PGID=1000
+ENTRYPOINT chown $PUID:$PGID /config /media \
+ && gosu $PUID:$PGID dotnet /jellyfin/EmbyServer.dll -programdata /config