Add MPD docker setup

templates/mpd/dockerfile.j2

@@ -0,0 +1,25 @@
+# {{ ansible_managed }}
+
+FROM alpine:latest
+
+RUN apk --no-cache add \
+        mpd; \
+
+RUN useradd \
+  --uid 1000 \
+  --guid 1000 \
+  --groups mpd \
+  --shell /sbin/nologin \
+  --no-create-home \
+  --no-user-group \
+  sonny
+
+USER sonny
+
+WORKDIR /app
+
+RUN mkdir /app/config /app/state /app/playlists
+
+EXPOSE {{ mpd_port }}/tcp {{ mpd_http_stream_port }}/tcp {{ mpd_http_mobile_stream_port }}/tcp
+
+CMD ["/usr/bin/mpd", "--no-daemon", "--stdout", "/app/config/mpd.conf"]