More Docker work

- Dockerfile now builds Inbucket inside the container
- Add starter inbucket.conf for Docker
- Add install.sh to build inbucket inside container
- Add customized greeting.html for Docker

Dockerfile

@@ -3,21 +3,16 @@
 FROM crosbymichael/golang
 MAINTAINER James Hillyerd, @jameshillyerd
 
-# Install Inbucket
+# Configuration (WORKDIR doesn't support env vars)
+ENV INBUCKET_SRC $GOPATH/src/github.com/jhillyerd/inbucket
 ENV INBUCKET_HOME /opt/inbucket
-ADD inbucket $INBUCKET_HOME/inbucket
-ADD themes $INBUCKET_HOME/themes
-ADD etc/unix-sample.conf $INBUCKET_HOME/inbucket.conf
-
-# Volume for mail data
-VOLUME /var/opt/inbucket
-
-# SMTP, HTTP, POP3 ports
-EXPOSE 25
-EXPOSE 80
-EXPOSE 110
-
-# Start Inbucket (WORKDIR doesn't support env vars)
 WORKDIR /opt/inbucket
-ENTRYPOINT ["./inbucket"]
-CMD ["inbucket.conf"]
+ENTRYPOINT ["bin/inbucket"]
+CMD ["/etc/opt/inbucket.conf"]
+
+# Ports: SMTP, HTTP, POP3
+EXPOSE 10025 10080 10110
+
+# Build Inbucket
+ADD . $INBUCKET_SRC/
+RUN "$INBUCKET_SRC/etc/docker/install.sh"