abuild: support cross-invocation caching using named volumes

Signed-off-by: Richard Mortier <mort@cantab.net>

2 files changed, 25 insertions, 16 deletions

diff --git a/Makefile b/Makefile
index e0befe9..fede06e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,23 +1,32 @@
 .DEFAULT: build
 
+IMG = mor1/abuild
+VOLS = bin etc lib sbin usr var
 TAGS := $(shell \
 	curl -s https://registry.hub.docker.com/v1/repositories/alpine/tags \
 	| jq -r '.[].name' \
 )
+TAGS = edge
 
 .PHONY: build
 build: $(patsubst %, build-%, $(TAGS))
+	sed 's/%%ALPINE_VOLUMES%%/$(VOLS)/' abuild.in >| abuild
 
 .PHONY: build-%
 build-%:
 	sed 's/%%ALPINE_TAG%%/$*/' Dockerfile.in >| Dockerfile
-	DOCKER_BUILDKIT=1 docker build $$DOCKER_FLAGS -t mor1/abuild:$* .
+	for v in $(VOLS) ; do docker volume create alpine-$*-$$v ; done
+	DOCKER_BUILDKIT=1 docker build $$DOCKER_FLAGS -t $(IMG):$* .
 	$(RM) Dockerfile
 
 .PHONY: push
 push: build
-	docker push $(DOCKER_FLAGS) mor1/abuild
+	docker push $(DOCKER_FLAGS) $(IMG)
 
 .PHONY: clean
 clean:
 	$(RM) Dockerfile
+
+.PHONY: distclean
+distclean: clean
+	docker rmi -f $$(docker images -q $(IMG))
diff --git a/abuild b/abuild
index 20839eb..05f1fe8 100755
--- a/abuild
+++ b/abuild
@@ -16,30 +16,30 @@ fi
 
 # use branch to figure out most appropriate alpine version
 if [ -z "$DOCKER_ABUILD_VERSION" ]; then
-  _ABUILD_BRANCH=$(git status | head -1)
-  _ABUILD_BRANCH="${_ABUILD_BRANCH##*[ /]}"
-  _ABUILD_BRANCH="${_ABUILD_BRANCH%-stable}"
+  ABUILD_BRANCH=$(git status | head -1)
+  ABUILD_BRANCH="${ABUILD_BRANCH##*[ /]}"
+  ABUILD_BRANCH="${ABUILD_BRANCH%-stable}"
 
-  case $_ABUILD_BRANCH in
+  case $ABUILD_BRANCH in
     [[:digit:]].[[:digit:]] )
-      _ALPINE_VERSION=$_ABUILD_BRANCH
+      ALPINE_VERSION=$ABUILD_BRANCH
       ;;
     * )
-      _ALPINE_VERSION=edge
+      ALPINE_VERSION=edge
       ;;
   esac
 else
-  _ALPINE_VERSION=$DOCKER_ABUILD_VERSION
+  ALPINE_VERSION=$DOCKER_ABUILD_VERSION
 fi
 
-_ABUILD_DIR=${HOME}/.abuild/${_ALPINE_VERSION}
-_ABUILD_VOLUMES="
+ABUILD_VOLUMES="
     -v ${HOME}/.abuild:/home/builder/.abuild
-    -v ${_ABUILD_DIR}/.cache:/var/cache/apk
-    -v ${_ABUILD_DIR}/.distfiles:/var/cache/distfiles
     -v ${PWD%/aports*}/aports:/home/builder/aports
-    -v ${PWD%/aports*}/packages/${_ALPINE_VERSION}:/home/builder/packages
 "
+for v in %%ALPINE_VOLUMES%%; do
+  ABUILD_VOLUMES="$ABUILD_VOLUMES -v alpine-$ALPINE_VERSION-$v:/$v"
+done
 
-DOCKER="docker run -ti $_ABUILD_VOLUMES -e DOCKER_ABUILD_DEBUG $_ABUILD_ARGS"
-$DOCKER --workdir /home/builder/aports/${PWD#*/aports} mor1/abuild:$_ALPINE_VERSION "$@"
+ABUILD_WORKDIR=/home/builder/aports${PWD#*/aports}
+DOCKER="docker run -ti $ABUILD_VOLUMES -e DOCKER_ABUILD_DEBUG $DOCKER_ABUILD_ARGS"
+$DOCKER --workdir $ABUILD_WORKDIR mor1/abuild:$ALPINE_VERSION "$@"