Packaging, dockerbuilder: Automate pushing docker binary packages

Makefile

@@ -46,6 +46,7 @@ whichrelease:
 
 release: $(BINRELEASE)
 	s3cmd -P put $(BINRELEASE) s3://get.docker.io/builds/`uname -s`/`uname -m`/docker-$(RELEASE_VERSION).tgz
+	s3cmd -P put docker-latest.tgz s3://get.docker.io/builds/`uname -s`/`uname -m`/docker-latest.tgz
 
 srcrelease: $(SRCRELEASE)
 deps: $(DOCKER_DIR)
@@ -60,6 +61,7 @@ $(SRCRELEASE):
 $(BINRELEASE): $(SRCRELEASE)
 	rm -f $(BINRELEASE)
 	cd $(SRCRELEASE); make; cp -R bin docker-$(RELEASE_VERSION); tar -f ../$(BINRELEASE) -zv -c docker-$(RELEASE_VERSION)
+	cd $(SRCRELEASE); cp -R bin docker-latest; tar -f ../docker-latest.tgz -zv -c docker-latest
 
 clean:
 	@rm -rf $(dir $(DOCKER_BIN))

hack/dockerbuilder/Dockerfile

@@ -27,5 +27,4 @@ run	apt-get install -y -q devscripts
 # Copy dockerbuilder files into the container
 add	.       /src
 run	cp /src/dockerbuilder /usr/local/bin/ && chmod +x /usr/local/bin/dockerbuilder
-run	cp /src/s3cfg /.s3cfg
 cmd	["dockerbuilder"]

hack/dockerbuilder/dockerbuilder

@@ -13,12 +13,10 @@ fi
 
 export REVISION=$1
 
-if [ -z "$AWS_ID" ]; then
-	echo "Warning: environment variable AWS_ID is not set. Won't upload to S3."
-fi
-
-if [ -z "$AWS_KEY" ]; then
-	echo "Warning: environment variable AWS_KEY is not set. Won't upload to S3."
+if [ -z "$AWS_ID" -o -z "$AWS_KEY" ]; then
+	echo "Warning: either AWS_ID or AWS_KEY environment variable not set. Won't upload to S3."
+else
+	/bin/echo -e "[default]\naccess_key = $AWS_ID\nsecret_key = $AWS_KEY\n" > /.s3cfg
 fi
 
 if [ -z "$GPG_KEY" ]; then
@@ -35,6 +33,9 @@ else
 	make release RELEASE_VERSION=$REVISION
 fi
 
+# Remove credentials from container
+rm -f /.s3cfg
+
 if [ -z "$NO_UBUNTU" ]; then
 	export PATH=`echo $PATH | sed 's#/usr/local/go/bin:##g'`
 	(cd packaging/ubuntu && make ubuntu)

hack/dockerbuilder/s3cfg

@@ -1,3 +0,0 @@
-[default]
-access_key = $AWS_ID
-secret_key = $AWS_KEY