docker: Don't try shell expansion in Makefile.

The original syntax, at least, is not supported.

diff --git a/docker/build_tools/Makefile b/docker/build_tools/Makefile
index 7fdad914c84f3ed3fa8389de730724da89ae3821..e41b183f0c9296a33539ee610fdc55310d3a71c5 100644 (file)
--- a/docker/build_tools/Makefile
+++ b/docker/build_tools/Makefile
@@ -110,27 +110,27 @@ api-image: passenger-image $(API_DEPS)
        mkdir -p api/generated
        tar -c -z -f api/generated/api.tar.gz -C ../services api --exclude=api/log/*
        $(DOCKER_BUILD) -t arvados/api api
-       echo -n "Built at $(date)" > api-image
+       date >api-image
 
 doc-image: base-image $(DOC_DEPS)
        mkdir -p doc/generated
        tar -c -z -f doc/generated/doc.tar.gz -C .. doc
        $(DOCKER_BUILD) -t arvados/doc doc
-       echo -n "Built at $(date)" > doc-image
+       date >doc-image
 
 workbench-image: passenger-image $(WORKBENCH_DEPS)
        mkdir -p workbench/generated
        tar -c -z -f workbench/generated/workbench.tar.gz -C ../apps workbench
        $(DOCKER_BUILD) -t arvados/workbench workbench
-       echo -n "Built at $(date)" > workbench-image
+       date >workbench-image
 
 warehouse-image: base-image $(WAREHOUSE_DEPS)
        $(DOCKER_BUILD) -t arvados/warehouse warehouse
-       echo -n "Built at $(date)" > warehouse-image
+       date >warehouse-image
 
 sso-image: passenger-image $(SSO_DEPS)
        $(DOCKER_BUILD) -t arvados/sso sso
-       echo -n "Built at $(date)" > sso-image
+       date >sso-image
 
 # ============================================================
 # The arvados/base image is the base Debian image plus packages
@@ -138,13 +138,12 @@ sso-image: passenger-image $(SSO_DEPS)
 
 passenger-image: base-image
        $(DOCKER_BUILD) -t arvados/passenger passenger
-       echo -n "Built at $(date)" > passenger-image
+       date >passenger-image
 
 base-image: debian-image $(BASE_DEPS)
        $(DOCKER_BUILD) -t arvados/base base
-       echo -n "Built at $(date)" > base-image
+       date >base-image
 
 debian-image:
        ./mkimage-debootstrap.sh arvados/debian wheezy ftp://ftp.us.debian.org/debian/
-       echo -n "Built at $(date)" > debian-image
-
+       date >debian-image