add Dockerfile

.dockerignore

@@ -0,0 +1 @@
+dist/

Dockerfile

@@ -0,0 +1,20 @@
+FROM debian:9.4
+
+WORKDIR /home
+
+RUN apt-get update && \
+    apt-get -y install build-essential haskell-platform sdcc
+
+# install dependencies as a seperate step because
+# this takes quite a long time and changes less
+# frequently
+COPY cabal.config *.cabal /home/
+RUN cabal update \
+    && cabal install --only-dependencies
+
+# build firmware first - it's required by the main tool
+COPY firmware /home/firmware/
+RUN make -C firmware
+
+COPY *.hs LICENSE /home/
+RUN cabal install --bindir=/usr/local/bin

README.md

@@ -75,7 +75,6 @@ wide hub, and no shift):
 
     $ bSpokeLight --offset 7 --rotation 10.5 --output my-firmware.bin …
 
-
 Installation
 ------------
 
@@ -90,6 +89,20 @@ significant interest, I am avoiding the effort of polishing this.
 You should now find a `bSpokeLight` binary. The firmware is embedded in it, so
 you can use it without any other other file from the repository.
 
+Docker Container
+----------------
+To build:
+
+    docker build -t bspoke .
+
+To run:
+
+    docker run --rm -it -v $PWD:/home bspoke bSpokeLight \
+        -o fw.bin imgs/star.png 10
+
+To develop:
+
+    docker run --rm -it -v $PWD:/home bspoke bash
 
 Hacking on bSpokeLight
 ----------------------
@@ -137,5 +150,3 @@ permissive MIT [license].
 [source code]: https://github.com/nomeata/bSpokeLight
 [Joachim Breitner]: http://www.joachim-breitner.de/
 [license]: https://github.com/nomeata/bSpokeLight/blob/LICENSE
-
-

cabal.config

@@ -0,0 +1,32 @@
+constraints: JuicyPixels ==3.2.9.5,
+             ghc-prim ==0.5.0.0,
+             rts ==1.0,
+             integer-gmp ==1.0.0.1,
+             binary ==0.8.3.0,
+             array ==0.5.1.1,
+             bytestring ==0.10.8.1,
+             deepseq ==1.4.2.0,
+             containers ==0.5.7.1,
+             mtl ==2.2.1,
+             transformers ==0.5.2.0,
+             primitive ==0.6.4.0,
+             vector ==0.12.0.1,
+             zlib ==0.6.1.2,
+             bitwise ==0.1.1.1,
+             file-embed ==0.0.10.1,
+             directory ==1.3.0.0,
+             filepath ==1.4.1.1,
+             time ==1.6.0.1,
+             unix ==2.7.2.1,
+             template-haskell ==2.11.1.0,
+             ghc-boot-th ==8.0.2,
+             pretty ==1.1.3.3,
+             optparse-applicative ==0.14.2.0,
+             ansi-wl-pprint ==0.6.8.2,
+             ansi-terminal ==0.8.0.4,
+             colour ==2.3.4,
+             process ==1.4.3.0,
+             transformers-compat ==0.6.2,
+             regex-posix ==0.95.2,
+             regex-base ==0.93.2,
+             split ==0.2.3.2