Add more syntax files and include syntax highlighter in the repo

runtime/syntax/dockerfile.yaml

@@ -0,0 +1,33 @@
+filetype: dockerfile
+
+detect:
+    filename: "(Dockerfile[^/]*$|\\.dockerfile$)"
+
+rules:
+    ## Keywords
+    - keyword: "(?i)^(FROM|MAINTAINER|RUN|CMD|LABEL|EXPOSE|ENV|ADD|COPY|ENTRYPOINT|VOLUME|USER|WORKDIR|ONBUILD|ARG|HEALTHCHECK|STOPSIGNAL|SHELL)[[:space:]]"
+
+      ## Brackets & parenthesis
+    - statement: "(\\(|\\)|\\[|\\])"
+
+      ## Double ampersand
+    - special: "&&"
+
+      ## Comments
+    - comment:
+        start: "#"
+        end: "$"
+        rules:
+            - todo: "(TODO|XXX|FIXME):?"
+
+    - constant.string:
+        start: "\""
+        end: "\""
+        rules:
+            - constant.specialChar: "\\\\."
+
+    - constant.string:
+        start: "'"
+        end: "'"
+        rules:
+            - constant.specialChar: "\\\\."