Fix setting the HTTPS proxy

Some places were not correctly setting the HTTPS proxy, and were only
setting the HTTP proxy. This was fine until Docker 20.10.10, which then
started using `https_proxy` for HTTPS connections.

Signed-off-by: Saikrishna Arcot <[email protected]>

Author: saiarcot895

slave.mk

@@ -788,8 +788,9 @@ $(SONIC_INSTALL_WHEELS) : $(PYTHON_WHEELS_PATH)/%-install : .platform $$(addsuff
 
 # start docker daemon
 docker-start :
-	@sudo sed -i '/http_proxy/d' /etc/default/docker
+	@sudo sed -i -e '/http_proxy/d' -e '/https_proxy/d' /etc/default/docker
 	@sudo bash -c "{ echo \"export http_proxy=$$http_proxy\"; \
+	            echo \"export https_proxy=$$https_proxy\"; \
 	            echo \"export no_proxy=$$no_proxy\"; } >> /etc/default/docker"
 	@test x$(SONIC_CONFIG_USE_NATIVE_DOCKERD_FOR_BUILD) != x"y" && sudo service docker status &> /dev/null || ( sudo service docker start &> /dev/null && ./scripts/wait_for_docker.sh 60 )
 
@@ -976,7 +977,7 @@ $(addprefix $(TARGET_PATH)/, $(DOCKER_DBG_IMAGES)) : $(TARGET_PATH)/%-$(DBG_IMAG
 		docker build \
 			$(if $($*.gz_DBG_DEPENDS), --squash --no-cache, --no-cache) \
 			--build-arg http_proxy=$(HTTP_PROXY) \
-			--build-arg http_proxy=$(HTTP_PROXY) \
+			--build-arg https_proxy=$(HTTPS_PROXY) \
 			--build-arg no_proxy=$(NO_PROXY) \
 			--build-arg docker_container_name=$($*.gz_CONTAINER_NAME) \
 			--label com.azure.sonic.manifest="$$(cat $($*.gz_PATH)/manifest.json)" \