init commit

.drone.yml

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+---
+kind: pipeline
+type: docker
+name: docker-build
+
+steps:
+  - name: docker build
+    image: shnee:dind
+    volumes:
+      - name: dockersock
+        path: /var/run
+    commands:
+      - sleep 5  # give docker enough time to start
+      - make
+
+services:
+  - name: docker
+    image: docker:dind
+    privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
+
+volumes:
+  - name: dockersock
+    temp: {}

Dockerfile

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+FROM docker:dind
+
+RUN apk add --no-cache \
+        make

Makefile

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+default: build
+
+DATE = $(shell date +%F)
+SHORT_COMMIT_HASH = $(shell git log -1 --format=%h)
+
+build:
+	docker build . -t shnee/dind:latest
+
+tag:
+	docker tag shnee/dind:latest shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH)
+
+clean: rm-unique
+	-docker rmi shnee/dind:latest
+
+rm-unique:
+	-docker rmi shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH)
+
+help:
+	@echo TODO REM do me.
+
+.PHONY: default build tag clean rm-unique help