Some Initial Work

makefiles/check-defined.mk

@@ -0,0 +1,16 @@
+# check_defined is a function that will error if the passed in variable is
+# undefined.
+#
+# usage:
+#   install:
+#     $(call check_defined, var1)
+#     $(call check_defined, var2)
+#
+# Copied this from https://gist.github.com/bbl/bf4bf5875d0c705c4cd78d264f98a8b1
+check_defined = \
+    $(strip $(foreach 1,$1, \
+        $(call __check_defined,$1,$(strip $(value 2)))))
+__check_defined = \
+    $(if $(value $1),, \
+        $(error Undefined $1$(if $2, ($2))))
+

makefiles/common.mk

@@ -0,0 +1,143 @@
+DOCKERFILE_LIST := $(strip $(shell \
+    for version in $(VERSION_LIST); do \
+        printf "Dockerfile.%s " $$version ; \
+    done))
+
+REGISTRY = docker.shnee.net
+NAMESPACE = shnee
+SUBMODULE_PATH = common
+
+# TODO STARTHERE this is wring just find a way to create tags, command will be
+# the same except the tag.
+BUILD_CMDS := $(shell \
+    for version in $(VERSION_LIST); do \
+        echo "docker build . $(DOCKER_BUILD_ARGS) -f Dockerfile.$$version \
+	    -t $(IMAGE_NAME):$$version"; done)
+
+$(call check_defined, IMAGE_NAME)
+DOCKER_BUILD_ARGS =
+BUILD_CMD = docker build . $(DOCKER_BUILD_ARGS) -f Dockerfile.$(VERSION) -t \
+	        $(IMAGE_NAME):$(VERSION)
+
+# These variables are used to create a unique tag for the image being built.
+DATE = $(shell date +%F)
+SHORT_COMMIT_HASH = $(shell git log -1 --format=%h)
+
+ANSIBLE_CONST_ARGS ?= all \
+    -i localhost, \
+    -m template \
+    --connection=local \
+
+################################################################################
+# tags
+################################################################################
+
+LATEST_TAG = latest
+# UNIQUE_TAG_SUFFIX ?= $(DATE)-$(SHORT_COMMIT_HASH)
+UNIQUE_TAG_SUFFIX = $(DATE)
+
+################################################################################
+# end tags
+################################################################################
+
+common-submodule: common/.git
+
+update-common-submodule:
+	git submodule update --init
+
+# $(DOCKERFILE_LIST):
+# 	@echo ansible template $@
+
+.drone.yml: common/templates/drone.yml.tpl
+	# TODO ansible template command.
+
+# version-check:
+# 	# TODO Consider makign sure that given version is in the version list.
+# 	$(call check_defined, VERSION)
+
+set-version-%:
+
+	@# Set the version using the wildcard from the target.
+	$(eval VERSION=$*)
+
+	@# Make sure that the VERSION_LIST is set.
+	$(call check_defined, VERSION_LIST)
+
+	@# Check that the version from the targets wildcard is in our
+	@# VERSION_LIST. If not then error out with a message.
+	@if echo $(VERSION_LIST) | grep -q $* ; then :; else \
+	    echo "ERROR: Version $* is not in VERSION_LIST: $(VERSION_LIST)"; \
+	    exit 1; fi
+
+Dockerfile.j2: ;@:
+
+Dockerfile.%: set-version-% Dockerfile.j2
+	# TODO the fact that this target depends on BASE_IMAGE_NAME is really a
+	# detail of the Dockerfile template. We need to come up with a way to
+	# call a target in the parent repo to check that vars are defined and
+	# that adds ansible var arguments.
+	$(call check_defined, BASE_IMAGE_NAME)
+	ansible $(ANSIBLE_CONST_ARGS) \
+	    -e "version=$*" \
+	    -e "base_image_name=$(BASE_IMAGE_NAME)" \
+	    -a "src=Dockerfile.j2 dest=$@"
+
+foreach-version = \
+    for version in $(VERSION_LIST); do \
+        make $1-$$version; \
+    done
+
+build-all:
+	for version in $(VERSION_LIST); do \
+	    make build-$$version; \
+	done
+
+tag-all:
+	$(call foreach-version,tag)
+
+push-all:
+	$(call foreach-version,push)
+
+# TODO REM STARTHERE it would be cool if we could pull base images. If we do
+# that consider templating the base-image in the Dockerfile.
+build-%: set-version-% Dockerfile.%
+	$(BUILD_CMD)
+
+.PHONY: tag-%
+tag-%: set-version-% build-%
+	docker tag $(IMAGE_NAME):$* $(REGISTRY)/$(NAMESPACE)/$(IMAGE_NAME):$*
+
+# TODO REM adda comment, this target has to be before `push-%`
+.PHONY: push-$(IMAGE_NAME)
+push-$(IMAGE_NAME)\:%: push-% ;@:
+
+.PHONY: push-%
+push-%: set-version-% tag-%
+	docker push $(REGISTRY)/$(NAMESPACE)/$(IMAGE_NAME):$*
+
+.PHONY: no-cache
+no-cache:
+	$(eval DOCKER_BUILD_ARGS=$(DOCKER_BUILD_ARGS) --no-cache)
+
+# TODO is this used? (no) do we need it.
+.PHONY: pull-base-%
+pull-base-%: set-version-%
+	$(call check_defined, BASE_IMAGE_NAME)
+	docker pull $(BASE_IMAGE_NAME):$*
+
+.PHONY: $(IMAGE_NAME)\:%
+$(IMAGE_NAME)\:%: build-% ;@:
+
+include $(SUBMODULE_PATH)/makefiles/check-defined.mk
+
+.SUFFIXES:
+
+.PHONY: build-% set-version-%
+.PHONY: update-common-submodule
+
+#  From make manual:
+# .SECONDARY with no prerequisites causes all targets to be treated as secondary
+# (i.e., no target is removed because it is considered intermediate). 
+#
+# Without this target the Dockerfiles were getting removed.
+.SECONDARY:

templates/drone.yml.tpl

@@ -0,0 +1,31 @@
+---
+kind: pipeline
+type: docker
+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
+        path: /var/run
+    commands:
+      - sleep 5  # give docker enough time to start
+      "{{ docker_build_yaml }}"
+
+services:
+  - name: docker
+    image: shnee/dind
+    privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
+
+volumes:
+  - name: dockersock
+    temp: {}