add drone CI and readme

.drone.yml

@@ -0,0 +1,48 @@
+---
+kind: pipeline
+type: docker
+name: main
+
+trigger:
+  branch:
+    - master
+
+steps:
+  - name: prepare
+    image: docker:latest
+    volumes:
+      - name: docker-socket
+        path: /var/run/docker.sock
+    commands:
+      - echo 'http://dl-cdn.alpinelinux.org/alpine/edge/community' > /etc/apk/repositories
+      - apk update
+      - apk add git yq
+      - git clone https://github.com/drone/drone.git .
+      - LATEST_VERSION=$(git tag --sort v:refname | grep '^v[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}$' | tail -n 1)
+      - git checkout $LATEST_VERSION
+      - GOLANG_IMG=$(yq read .drone.yml 'steps[0].image')
+      - docker pull $GOLANG_IMG
+      - docker tag $GOLANG_IMG drone-builder:latest
+      - docker image rm $GOLANG_IMG
+  
+  - name: compile
+    image: drone-builder:latest
+    environment:
+      GOARCH: amd64
+      GOOS: linux
+    commands:
+      - go build -ldflags "-extldflags \"-static\"" -tags nolimit -o release/linux/amd64/drone-server github.com/drone/drone/cmd/drone-server
+
+  - name: docker-build
+    image: docker:latest
+    volumes: 
+      - name: docker-socket
+        path: /var/run/docker.sock
+    commands:
+      - docker build -t registry.jfmonty2.com/drone:latest -f docker/Dockerfile.server.linux.amd64 .
+
+
+volumes:
+  - name: docker-socket
+    host:
+      path: /var/run/docker.sock

README.md

@@ -0,0 +1,15 @@
+# No-limit Drone server CI pipeline
+
+The official Docker images provided by the Drone CI project use the Enterprise version, which is
+limied to a total of 5000 builds unless the server is in posession of a valid Enterprise license.
+For personal or small-company (<$1M yearly revenue) use this limitation can be avoided by compiling
+the Drone server with the `nolimit` tag. 
+
+This CI pipeline attempts to build the latest version of the Drone server by:
+
+* Cloning the repository from Github
+* Checking out the latest version tag
+* Parsing the repository's `.drone.yml` file to determine what Golang image to use
+* Compiling with the `nolimit` tag
+* Building the Docker image using the included Dockerfile
+* Deploying said dockerfile to a private registry