19.03 works, scaffolding started for more versions.

.drone.yml

@@ -5,6 +5,11 @@ name: docker-build
 
 steps:
   - name: docker build
+    # When using 20.10 there is an issue when running on hosts with older
+    # versions of docker, runc, and libseccomp. See
+    # https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.14.0#faccessat2
+    # for info on the issue. So to avoid the bug we're using an older version,
+    # 19.03.
     image: shnee/dind
     volumes:
       - name: dockersock

Dockerfile

@@ -1,5 +1,7 @@
-# FROM docker:dind
-FROM docker:19.03-dind
+ARG DOCKER_VERSION=19.03
+ARG BASE_IMAGE_TAG=$DOCKER_VERSION-dind
+
+FROM docker:$BASE_IMAGE_TAG
 
 RUN apk add --no-cache \
         make

Makefile

@@ -1,21 +1,41 @@
-default: build
+default: 19.03
 
-DATE = $(shell date +%F)
-SHORT_COMMIT_HASH = $(shell git log -1 --format=%h)
+IMAGE_NAME := shnee/dind
+DOCKER_VERSION = ""
 
-build:
-	docker build . -t shnee/dind:latest
+DATE := $(shell date +%F)
+SHORT_COMMIT_HASH := $(shell git log -1 --format=%h)
 
-tag:
-	docker tag shnee/dind:latest shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH)
+UNIQUE_TAG = $(DOCKER_VERSION)-$(DATE)-$(SHORT_COMMIT_HASH)
 
-clean: rm-unique
-	-docker rmi shnee/dind:latest
+# When using 20.10 there is an issue when running on hosts with older versions
+# of docker, runc, and libseccomp. See
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.14.0#faccessat2
+# for info on the issue. So to avoid the bug we're using an older version,
+# 19.03.
+build: 19.03
+# TODO See if we can keep this makefile generic and have an include directory
+# for specific stuff.
+19.03: 19.03-vars docker-build
 
-rm-unique:
-	-docker rmi shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH)
+19.03-clean: 19.03-vars docker-rm
+
+19.03-vars:
+	$(eval DOCKER_VERSION = 19.03)
+	$(eval DOCKER_TAG = 19.03)
+
+docker-build:
+	docker build . \
+	    -t $(IMAGE_NAME):$(DOCKER_TAG)
+
+clean: clean-all
+clean-all: 19.03-clean
+
+docker-rm:
+	docker rmi $(IMAGE_NAME):$(DOCKER_TAG)
 
 help:
 	@echo TODO REM do me.
 
-.PHONY: default build tag clean rm-unique help
+.PHONY: 19.03 19.03-clean 19.03-vars
+.PHONY: default build tag clean clean-all docker-rm help