Add Dockerfile and readme

Dockerfile

@@ -0,0 +1,14 @@
+FROM wiiulegacy/core:0.1
+
+COPY --from=wiiulegacy/libiosuhax:0.3 /artifacts $DEVKITPRO/portlibs
+
+RUN git clone https://github.com/Maschell/libntfs-wiiu  && cd libntfs-wiiu && git checkout v2013.1.13
+WORKDIR libntfs-wiiu
+
+RUN make wiiu-release && \
+	find $DEVKITPRO/portlibs -maxdepth 3 -type f -delete && \
+	make -C source wiiu-install PLATFORM=wiiu && \
+	cp -r ${DEVKITPRO}/portlibs /artifacts
+
+WORKDIR /artifacts
+RUN find .

README.md

@@ -10,3 +10,11 @@ Link the application with:
 To be able to use libntfs for the Wii u, you need to install the following dependencies:
 
 - [libiosuhax](https://github.com/dimok789/libiosuhax)
+
+# Use the prebuilt files from a Docker image.
+The image `wiiulegacy/libntfs` on [Docker Hub](https://hub.docker.com/r/wiiulegacy/libntfs/) provides a prebuilt library in the `/artifacts` directory. Copy it into your DevkitPPC portlibs folder.  
+
+Example:  
+```
+COPY --from=wiiulegacy/libntfs:2013.1.13 /artifacts $DEVKITPRO/portlibs
+```