Add initial CI implementation

.drone.yml

@@ -0,0 +1,36 @@
+services:
+  docker:
+    image: docker:dind
+    privileged: true
+
+pipeline:
+  build:
+    image: docker
+    environment:
+       - DOCKER_HOST=tcp://docker:2375
+    commands:
+       - docker build -t devbuild . 
+
+  test:
+    image: docker
+    environment:
+       - DOCKER_HOST=tcp://docker:2375
+    commands:
+      - export RESULT=$(docker run --name=DEV --rm devbuild /bin/sh -c 'echo This is a test string | md5sum | cut -f1 -d\ ' )
+      - echo $RESULT
+      - test $RESULT = 'b584c39f97dfe71ebceea3fdb860ed6c'
+
+  publish:
+    image: docker
+    secrets: [ DOCKER_USER, DOCKER_PASS ]
+    environment:
+       - DOCKER_HOST=tcp://docker:2375
+    commands:
+       - apk add --no-cache openssl
+       - docker tag devbuild adamant/busybox:latest
+       - docker tag devbuild adamant/busybox:1
+       - docker tag devbuild adamant/busybox:1.0
+       - docker login -u $DOCKER_USER -p $DOCKER_PASS
+       - docker push adamant/busybox:latest
+       - docker push adamant/busybox:1
+       - docker push adamant/busybox:1.0