Add docker image building

.drone.yml

@@ -11,4 +11,15 @@ steps:
       IMGUR_CLIENT_ID:
         from_secret: imgur_client_id
       YOUTUBE_KEY:
-        from_secret: youtube_key
+        from_secret: youtube_key
+  - name: docker
+    image: plugins/docker
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: registry.meow.tf/tyler/linkinfo
+      registry: registry.meow.tf
+      tags:
+        - latest

Dockerfile

@@ -0,0 +1,18 @@
+FROM golang:alpine AS build-env
+
+ADD . /src
+RUN apk --no-cache add git gcc musl-dev
+RUN cd /src && go get -d && go build -o linkinfo service/main.go
+
+FROM alpine
+
+MAINTAINER Tyler Stuyfzand <tyler@tystuyfzand.com>
+
+EXPOSE 53
+
+RUN apk --no-cache add tini
+ENTRYPOINT ["/sbin/tini", "-g", "--"]
+CMD ["linkinfo"]
+
+COPY --from=build-env /src/linkinfo /usr/local/bin/linkinfo
+RUN chmod +x /usr/local/bin/linkinfo