Dockerfile for production. (#44)

* Stealing good ideas from DockSTARTer

* Pushing an example WIP

* Actually ran and debugged container and it works now.
TODO: We need configurability for this to be more useful.

* Prepped docker-compose for if we get these envvars coded in.

* Removed unnecessary start.sh

* Removed env.example

* Fixed internal directory to conform more.

Resovles https://github.com/stashapp/stash/pull/44#issuecomment-485060195

* Logging options need quotes.

* I decided to use architecture tags since go-releaser can do multiple architectures.

* Compose version version: '3.4'

* No relative pathing on container side of volume

docker/production/docker-compose.yml

@@ -0,0 +1,31 @@
+# APPNICENAME=Stash
+# APPDESCRIPTION=An organizer for your porn, written in Go
+version: '3.4'
+services:
+  stash:
+    image: stashapp/stash:x86_64
+    restart: unless-stopped
+    ports:
+      - "9999:9999"
+    logging:
+      driver: "json-file"
+      options:
+        max-file: "10"
+        max-size: "200k"
+    environment:
+      - STASH_STASH=/data/
+      - STASH_GENERATED=/generated/
+      - STASH_METADATA=/metadata/
+      - STASH_CACHE=/cache/
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      ## Keep configs here.
+      - ./config:/root/.stash
+      ## Point this at your collection.
+      - ./data:/data
+      ## This is where pre-generated transcodes live.
+      - ./transcodes:/transcodes
+      ## This is where your stash's metadata lives
+      - ./metadata:/metadata
+      ## Any other cache content.
+      - ./cache:/cache

docker/production/x86_64/Dockerfile

@@ -0,0 +1,21 @@
+FROM ubuntu:18.04 as prep
+LABEL MAINTAINER="leopere [at] nixc [dot] us"
+
+RUN apt-get update && \
+    apt-get -y install curl xz-utils && \
+    apt-get autoclean -y && \
+    rm -rf /var/lib/apt/lists/*
+WORKDIR /
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN curl -L -o /stash $(curl -s https://api.github.com/repos/stashapp/stash/releases | grep -F 'stash-linux' | grep download | head -n 1 | cut -d'"' -f4) && \
+    chmod +x /stash && \
+    curl -o /ffmpeg.tar.xz https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz && \
+    tar xf /ffmpeg.tar.xz && \
+    rm ffmpeg.tar.xz && \
+    mv /ffmpeg*/ /ffmpeg/
+
+FROM ubuntu:18.04 as app
+RUN adduser stash --gecos GECOS --shell /bin/bash --disabled-password --home /home/stash
+COPY --from=prep /stash /ffmpeg/ffmpeg /ffmpeg/ffprobe /usr/bin/
+EXPOSE 9998
+CMD ["stash"]