chore: Set up droneci

.drone.yml

@@ -0,0 +1,35 @@
+clone:
+  git:
+    image: plugins/git
+    depth: 50
+    tags: true
+
+cache: [".npm"]
+
+pipeline:
+  npm-install:
+    group: install
+    image: node:8-alpine
+    commands: ["npm install"]
+
+  eslint:
+    group: install
+    image: marcbachmann/eslint:4.19.1
+    secrets: [gh_token]
+
+  npm-ls:
+    group: test
+    image: node:8-alpine
+    commands: ["npm ls -s"]
+
+  test:
+    group: test
+    image: node:8-alpine
+    commands: ["npm run test:ci -s"]
+
+  release:
+    group: publish
+    image: marcbachmann/semantic-release:15.1.3
+    secrets: [gh_token]
+    when:
+      event: push

package.json

@@ -8,7 +8,8 @@
     "url": "https://github.com/upfrontIO/microschema"
   },
   "scripts": {
-    "test": "ava test.js && eslint ."
+    "test": "ava test.js && eslint .",
+    "test:ci": "ava test.js"
   },
   "files": ["index.js"],
   "keywords": [
@@ -21,8 +22,7 @@
   "license": "MIT",
   "devDependencies": {
     "ava": "^0.25.0",
-    "eslint": "^4.19.0",
-    "semantic-release": "15.1.3"
+    "eslint": "^4.19.1"
   },
   "engines": {
     "node": ">=8.9.0",