do docker

.drone.yml

@@ -0,0 +1,18 @@
+---
+pipeline:
+
+  build:
+    image: plugins/docker
+    repo: reg.zknt.org/zknt/alpine
+    tags:
+      - 2.8.1
+    secrets: [ docker_username, docker_password ]
+
+  notify:
+    image: drillster/drone-email
+    host: mx01.mta.zknt.org
+    from: drone@zknt.org
+    secrets: [ email_username, email_password ]
+
+branches:
+  include: [ master ]

Dockerfile

@@ -1,5 +1,13 @@
-FROM scratch
-ENV ALPINE_VERSION 3.8.0
+FROM alpine as build
+ENV ALPINE_MIRROR https://uk.alpinelinux.org/alpine/v3.8/releases
+ENV ALPINE_VERSION 3.8.1
 ENV ALPINE_ARCH x86_64
-ADD alpine-minirootfs-$ALPINE_VERSION-$ALPINE_ARCH.tar.gz /
+WORKDIR /root
+RUN apk add --no-cache curl &&\
+  curl -LO ${ALPINE_MIRROR}/${ALPINE_ARCH}/alpine-minirootfs-${ALPINE_VERSION}-${ALPINE_ARCH}.tar.gz &&\
+  mkdir /dest &&\
+  tar -C /dest -xvzf alpine-minirootfs-${ALPINE_VERSION}-${ALPINE_ARCH}.tar.gz
+
+FROM scratch
+COPY --from=build /dest /
 CMD ["/bin/sh"]

Makefile

@@ -1,14 +0,0 @@
-ALPINE_VERSION=3.8.1
-ALPINE_MIRROR=https://uk.alpinelinux.org/alpine/v3.8/releases
-ALPINE_ARCH=x86_64
-
-image:
-	curl -LO $(ALPINE_MIRROR)/$(ALPINE_ARCH)/alpine-minirootfs-$(ALPINE_VERSION)-$(ALPINE_ARCH).tar.gz
-	curl -LO $(ALPINE_MIRROR)/$(ALPINE_ARCH)/alpine-minirootfs-$(ALPINE_VERSION)-$(ALPINE_ARCH).tar.gz.asc
-	gpg --verify alpine-minirootfs-$(ALPINE_VERSION)-$(ALPINE_ARCH).tar.gz.asc alpine-minirootfs-$(ALPINE_VERSION)-$(ALPINE_ARCH).tar.gz &&\
-	sed -i 's/^ENV ALPINE_VERSION.*/ENV ALPINE_VERSION $(ALPINE_VERSION)/' Dockerfile &&\
-	sed -i 's/^ENV ALPINE_ARCH.*/ENV ALPINE_ARCH $(ALPINE_ARCH)/' Dockerfile &&\
-    docker build . -t reg.zknt.org/zknt/alpine:$(ALPINE_VERSION)
-
-push:
-	docker push reg.zknt.org/zknt/alpine:$(ALPINE_VERSION)

README.md

@@ -0,0 +1,4 @@
+stock alpine
+============
+
+Last update: 2018-11-26