[dockers] Build stretch dockers only once and only in stretch slave docker (#2678)

Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>

Author: stepanblyschak

platform/mellanox/docker-syncd-mlnx-rpc.mk

@@ -6,9 +6,9 @@ $(DOCKER_SYNCD_MLNX_RPC)_DEPENDS += $(SYNCD_RPC) $(LIBTHRIFT)
 $(DOCKER_SYNCD_MLNX_RPC)_PYTHON_DEBS += $(MLNX_SFPD)
 $(DOCKER_SYNCD_MLNX_RPC)_LOAD_DOCKERS += $(DOCKER_SYNCD_MLNX)
 SONIC_DOCKER_IMAGES += $(DOCKER_SYNCD_MLNX_RPC)
+SONIC_STRETCH_DOCKERS += $(DOCKER_SYNCD_MLNX_RPC)
 ifeq ($(ENABLE_SYNCD_RPC),y)
 SONIC_INSTALL_DOCKER_IMAGES += $(DOCKER_SYNCD_MLNX_RPC)
-SONIC_STRETCH_DOCKERS += $(DOCKER_SYNCD_MLNX_RPC)
 endif
 
 $(DOCKER_SYNCD_MLNX_RPC)_CONTAINER_NAME = syncd

platform/mellanox/docker-syncd-mlnx.mk

@@ -6,9 +6,9 @@ $(DOCKER_SYNCD_MLNX)_DEPENDS += $(SYNCD) $(PYTHON_SDK_API)
 $(DOCKER_SYNCD_MLNX)_PYTHON_DEBS += $(MLNX_SFPD)
 $(DOCKER_SYNCD_MLNX)_LOAD_DOCKERS += $(DOCKER_CONFIG_ENGINE_STRETCH)
 SONIC_DOCKER_IMAGES += $(DOCKER_SYNCD_MLNX)
+SONIC_STRETCH_DOCKERS += $(DOCKER_SYNCD_MLNX)
 ifneq ($(ENABLE_SYNCD_RPC),y)
 SONIC_INSTALL_DOCKER_IMAGES += $(DOCKER_SYNCD_MLNX)
-SONIC_STRETCH_DOCKERS += $(DOCKER_SYNCD_MLNX)
 endif
 
 $(DOCKER_SYNCD_MLNX)_CONTAINER_NAME = syncd

rules/docker-base-stretch.mk

@@ -15,4 +15,4 @@ STRACE = strace
 $(DOCKER_BASE_STRETCH)_DBG_PACKAGES += $(GDB) $(GDBSERVER) $(VIM) $(OPENSSH) $(SSHPASS) $(STRACE)
 endif
 
-SONIC_DOCKER_IMAGES += $(DOCKER_BASE_STRETCH)
+SONIC_STRETCH_DOCKERS += $(DOCKER_BASE_STRETCH)

rules/docker-config-engine-stretch.mk

@@ -5,4 +5,4 @@ $(DOCKER_CONFIG_ENGINE_STRETCH)_PATH = $(DOCKERS_PATH)/docker-config-engine-stre
 $(DOCKER_CONFIG_ENGINE_STRETCH)_PYTHON_WHEELS += $(SWSSSDK_PY2)
 $(DOCKER_CONFIG_ENGINE_STRETCH)_PYTHON_WHEELS += $(SONIC_CONFIG_ENGINE)
 $(DOCKER_CONFIG_ENGINE_STRETCH)_LOAD_DOCKERS += $(DOCKER_BASE_STRETCH)
-SONIC_DOCKER_IMAGES += $(DOCKER_CONFIG_ENGINE_STRETCH)
+SONIC_STRETCH_DOCKERS += $(DOCKER_CONFIG_ENGINE_STRETCH)

slave.mk

@@ -464,8 +464,16 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_SIMPLE_DOCKER_IMAGES)) : $(TARGET_PATH)/%.g
 
 SONIC_TARGET_LIST += $(addprefix $(TARGET_PATH)/, $(SONIC_SIMPLE_DOCKER_IMAGES))
 
+# Build stretch docker images only in stretch slave docker,
+# jessie docker images only in jessie slave docker
+ifeq ($(BLDENV),stretch)
+	DOCKER_IMAGES := $(SONIC_STRETCH_DOCKERS)
+else
+	DOCKER_IMAGES := $(filter-out $(SONIC_STRETCH_DOCKERS), $(SONIC_DOCKER_IMAGES))
+endif
+
 # Targets for building docker images
-$(addprefix $(TARGET_PATH)/, $(SONIC_DOCKER_IMAGES)) : $(TARGET_PATH)/%.gz : .platform docker-start \
+$(addprefix $(TARGET_PATH)/, $(DOCKER_IMAGES)) : $(TARGET_PATH)/%.gz : .platform docker-start \
 		$$(addprefix $(DEBS_PATH)/,$$($$*.gz_DEPENDS)) \
 		$$(addprefix $(FILES_PATH)/,$$($$*.gz_FILES)) \
 		$$(addprefix $(PYTHON_DEBS_PATH)/,$$($$*.gz_PYTHON_DEBS)) \
@@ -506,11 +514,11 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_DOCKER_IMAGES)) : $(TARGET_PATH)/%.gz : .pl
 	if [ -f $($*.gz_PATH).patch/series ]; then pushd $($*.gz_PATH) && quilt pop -a -f; popd; fi
 	$(FOOTER)
 
-SONIC_TARGET_LIST += $(addprefix $(TARGET_PATH)/, $(SONIC_DOCKER_IMAGES))
+SONIC_TARGET_LIST += $(addprefix $(TARGET_PATH)/, $(DOCKER_IMAGES))
 
 DOCKER_LOAD_TARGETS = $(addsuffix -load,$(addprefix $(TARGET_PATH)/, \
 		      $(SONIC_SIMPLE_DOCKER_IMAGES) \
-		      $(SONIC_DOCKER_IMAGES)))
+		      $(DOCKER_IMAGES)))
 $(DOCKER_LOAD_TARGETS) : $(TARGET_PATH)/%.gz-load : .platform docker-start $$(TARGET_PATH)/$$*.gz
 	$(HEADER)
 	docker load -i $(TARGET_PATH)/$*.gz $(LOG)