[build]: add arch name in sonic-slave docker image

for exmaple, for arm64, the sonic-slave docker image name
is sonic-slave-arm64-$(USER)

for amd64, the docker image is kept as it is

Signed-off-by: Guohan Lu <lguohan@gmail.com>

.gitignore

@@ -23,6 +23,7 @@ target/
 
 # Autogenerated Dockerfiles
 sonic-slave*/Dockerfile
+sonic-slave*/Dockerfile.user
 dockers/*/Dockerfile
 platform/*/docker-*/Dockerfile
 

Makefile.cache

@@ -72,9 +72,9 @@ SONIC_COMMON_FLAGS_LIST :=  $(CONFIGURED_PLATFORM) \
                             $(SONIC_PROFILING_ON) $(SONIC_ENABLE_SYNCD_RPC)
 SONIC_COMMON_DPKG_LIST  :=  debian/control debian/changelog debian/rules \
                             debian/compat debian/install debian/copyright
-SONIC_COMMON_BASE_FILES_LIST  := sonic-slave-jessie/Dockerfile.j2 sonic-slave-jessie/Dockerfile.user \
-                                 sonic-slave-stretch/Dockerfile.j2 sonic-slave-stretch/Dockerfile.user \
-                                 sonic-slave-buster/Dockerfile.j2 sonic-slave-buster/Dockerfile.user
+SONIC_COMMON_BASE_FILES_LIST  := sonic-slave-jessie/Dockerfile.j2 sonic-slave-jessie/Dockerfile.user.j2 \
+                                 sonic-slave-stretch/Dockerfile.j2 sonic-slave-stretch/Dockerfile.user.j2 \
+                                 sonic-slave-buster/Dockerfile.j2 sonic-slave-buster/Dockerfile.user.j2
 
 
 
@@ -181,7 +181,7 @@ define GET_MOD_DEP_SHA
 	                        $($(dfile)_DEP_FLAGS_FILE) $($(dfile)_MOD_HASH_FILE) $($(dfile)_SMOD_HASH_FILE)) )
 	$(eval $(1)_DEP_FILES_MISSING := $(filter-out $(wildcard $($(1)_DEP_MOD_SHA_FILES)),$($(1)_DEP_MOD_SHA_FILES)) )
 	$(if $($(1)_DEP_FILES_MISSING), $(warning "[ DPKG ] Dependecy file(s) are not found for $(1) : $($(1)_DEP_FILES_MISSING)))
-	
+
 	$(eval $(1)_DEP_MOD_SHA := $(shell git hash-object  $($(1)_DEP_MOD_SHA_FILES) \
                             | sha1sum | awk '{print substr($$1,0,23);}'))
 endef

Makefile.work

@@ -91,7 +91,11 @@ endif
 
 include rules/config
 
+ifeq ($(CONFIGURED_ARCH),amd64)
 SLAVE_BASE_IMAGE = $(SLAVE_DIR)
+else
+SLAVE_BASE_IMAGE = $(SLAVE_DIR)-$(CONFIGURED_ARCH)
+endif
 SLAVE_IMAGE = $(SLAVE_BASE_IMAGE)-$(USER)
 
 # Generate the version control build info
@@ -101,6 +105,7 @@ $(shell SONIC_VERSION_CONTROL_COMPONENTS=$(SONIC_VERSION_CONTROL_COMPONENTS) \
 
 # Generate the slave Dockerfile, and prepare build info for it
 $(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) j2 $(SLAVE_DIR)/Dockerfile.j2 > $(SLAVE_DIR)/Dockerfile)
+$(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) j2 $(SLAVE_DIR)/Dockerfile.user.j2 > $(SLAVE_DIR)/Dockerfile.user)
 $(shell BUILD_SLAVE=y scripts/prepare_docker_buildinfo.sh $(SLAVE_BASE_IMAGE) $(SLAVE_DIR)/Dockerfile $(CONFIGURED_ARCH) "" $(BLDENV))
 
 # Add the versions in the tag, if the version change, need to rebuild the slave

sonic-slave-buster/Dockerfile.user → sonic-slave-buster/Dockerfile.user.j2

@@ -1,5 +1,9 @@
 ARG slave_base_tag_ref=latest
+{%- if CONFIGURED_ARCH == "amd64" %}
 FROM sonic-slave-buster:${slave_base_tag_ref}
+{%- else %}
+FROM sonic-slave-buster-{{ CONFIGURED_ARCH }}:${slave_base_tag_ref}
+{%- endif %}
 
 # Add user
 ARG user

sonic-slave-jessie/Dockerfile.user → sonic-slave-jessie/Dockerfile.user.j2

@@ -1,5 +1,9 @@
 ARG slave_base_tag_ref=latest
+{%- if CONFIGURED_ARCH == "amd64" %}
 FROM sonic-slave-jessie:${slave_base_tag_ref}
+{%- else %}
+FROM sonic-slave-jessie-{{ CONFIGURED_ARCH }}:${slave_base_tag_ref}
+{%- endif %}
 
 # Add user
 ARG user

sonic-slave-stretch/Dockerfile.user → sonic-slave-stretch/Dockerfile.user.j2

@@ -1,5 +1,9 @@
 ARG slave_base_tag_ref=latest
+{%- if CONFIGURED_ARCH == "amd64"  %}
 FROM sonic-slave-stretch:${slave_base_tag_ref}
+{%- else %}
+FROM sonic-slave-stretch-{{ CONFIGURED_ARCH }}:${slave_base_tag_ref}
+{%- endif %}
 
 # Add user
 ARG user