Add basic docker image

Author: DonnieWest

.travis.yml

@@ -1,3 +1,10 @@
 language: java
-install: ./gradlew install
-script: ./gradlew build -i
+
+services:
+  - docker
+
+script:
+  - ./gradlew build
+  - docker login -u "$DOCKER_USERNAME" -p "$DOCKER_PASSWORD"
+  - docker build ./ -t donniewest/kotlinlanguageserver:latest
+  - docker push donniewest/kotlinlanguageserver:latest

Dockerfile

@@ -0,0 +1,12 @@
+# Running this container will start a language server that listens for TCP connections on port 2088
+# Every connection will be run in a forked child process
+
+# Please note that before building the image, you have to build the language server with `./gradlew build`
+
+FROM openjdk:10
+
+COPY ./build/install ./
+
+EXPOSE 2088
+
+CMD ["./kotlin-language-server/bin/kotlin-language-server", "--tcp-server=0:2088"]