Basic working Dockerfile

No fancy script or minit automatic migration, etc, but if you start
the docker image and go in and manually do everything, it works.

Dockerfile

+FROM rinpatch/elixir:1.9.0-rc.0-alpine as build
+
+COPY . .
+
+ENV MIX_ENV prod
+
+RUN apk add git gcc g++ musl-dev make &&\
+	echo "import Mix.Config" > config/prod.secret.exs &&\
+	mix local.hex --force &&\
+	mix local.rebar --force
+
+RUN mix deps.get --only prod &&\
+	mkdir release &&\
+	mix release --path release
+
+FROM alpine:latest
+
+RUN echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories &&\
+	apk update &&\
+	apk add ncurses postgresql-client
+
+RUN adduser --system --shell /bin/false --home /opt/pleroma pleroma &&\
+	mkdir -p /var/lib/pleroma/uploads &&\
+	chown -R pleroma /var/lib/pleroma &&\
+	mkdir -p /var/lib/pleroma/static &&\
+	chown -R pleroma /var/lib/pleroma &&\
+	mkdir -p /etc/pleroma &&\
+	chown -R pleroma /etc/pleroma
+
+USER pleroma
+
+COPY --from=build --chown=pleroma:0 /release/ /opt/pleroma/