add docker support

.dockerignore

@@ -0,0 +1,6 @@
+.git
+.gitignore
+.travis.yml
+target
+LICENSE
+README.md

Dockerfile

@@ -0,0 +1,34 @@
+
+FROM alpine:edge
+
+#COPY ["Cargo.*", "/source/"]
+#COPY bin/ /source/bin/
+#COPY command/ /source/command/
+#COPY lib/ /source/lib/
+#COPY ctl/ /source/ctl/
+COPY . /source/
+COPY bin/config.toml /etc/sozu/sozu.toml
+
+RUN apk add --no-cache --virtual .build-dependencies \
+  cargo \
+  g++ \
+  gcc \
+  musl-dev \
+  rust && \
+  apk add --no-cache openssl-dev llvm-libunwind && \
+  cd /source && cd ctl && \
+  cargo build --release && \
+  cd ../bin && \
+  cargo build --release && \
+  cp /source/target/release/sozu /bin/sozu && \
+  cp /source/target/release/sozuctl /bin/sozuctl && \
+  cd / && \
+  apk del .build-dependencies && \
+  apk del && \
+  rm -rf /source && \
+  rm -rf /root/.cargo
+
+EXPOSE 80
+EXPOSE 443
+
+ENTRYPOINT ["/bin/sozu"]