Merge pull request #59 from ivanbratovic/dockerfile-update

Add 'AS' keyword to Dockerfile

Author: davidhcefx

Dockerfile.nanorc

@@ -1,7 +1,11 @@
 ## Syntax highlighting for Dockerfiles
 syntax "Dockerfile" "Dockerfile[^/]*$" "\.dockerfile$"
 
-## Keywords
+## AS keyword
+icolor red start="^FROM[[:space:]]" end="([[:space:]]AS[[:space:]]|$)"
+icolor white "^FROM[[:space:]]*[^[:space:]]+[[:space:]]*"
+
+## Other keywords
 icolor red "^(FROM|RUN|CMD|LABEL|MAINTAINER|EXPOSE|ENV|ADD|COPY|ENTRYPOINT|VOLUME|USER|WORKDIR|ARG|ONBUILD|STOPSIGNAL|HEALTHCHECK|SHELL)[[:space:]]"
 
 ## Brackets & parenthesis