Simplify Aleth's dockerfile

Author: chfast

clients/aleth:develop/Dockerfile

@@ -0,0 +1,22 @@
+# Multistage Dockerfile for the Aleth Ethereum node.
+# Build stage
+
+# This can be run separately, as a standalone image, 
+# to obtain a cache and save rebuilding all the time (during development)
+#
+# docker build --target builder -t aleth_base
+#
+
+FROM ethereum/aleth:nightly
+
+# Genesis template
+ADD config.json /config.json
+
+# Inject the startup script
+ADD aleth.sh /aleth.sh
+RUN chmod +x /aleth.sh
+
+# Export the usual networking ports to allow outside access to the node
+EXPOSE 8545 30303
+
+ENTRYPOINT ["/aleth.sh"]