Convert hardcoded values to read actual values (#10879)

* Convert hardcoded values to read actual values

* Fix assigment

* escape $

Makefile.core.mk

@@ -205,6 +205,9 @@ ifdef VARIANT
 endif
 	@export TAG
 	@echo "TAG=${TAG}"
+	$(eval BASE_VERSION := $(shell cd ${ISTIO_GO} && grep BASE_VERSION Makefile.core.mk | awk '{ print $$3}'))
+	@echo "BASE_VERSION=${BASE_VERSION}"
+	@export BASE_VERSION
 
 # doc test framework
 include tests/tests.mk

bin/init.sh

@@ -81,11 +81,6 @@ else
   make "${ISTIO_OUT}/release/istioctl-linux-amd64"
   cp -a "${ISTIO_OUT}/release/istioctl-linux-amd64" /gobin/istioctl
 fi
-# Get base version tag
-BASE_VERSION=$(grep BASE_VERSION Makefile.core.mk | awk '{ print $3}')
-export BASE_VERSION
-echo "BASE_VERSION=${BASE_VERSION}"
-
 
 popd > /dev/null
 

content/en/docs/setup/install/virtual-machine/common.sh

@@ -47,7 +47,7 @@ function setup_vm() {
     -v "${WORK_DIR}:/root" -v "${PWD}/content/en/docs/setup/install/virtual-machine:/test" \
     ${EXTRA_VM_ARGS:-} \
     -w "/root" \
-    gcr.io/istio-release/base:master-2022-01-14T19-01-09
+    gcr.io/istio-release/base:${BASE_VERSION}
 
   POD_CIDR=$(kubectl get node -ojsonpath='{.items[0].spec.podCIDR}')
   DOCKER_IP=$(docker inspect -f "{{ .NetworkSettings.Networks.kind.IPAddress }}" istio-testing-control-plane)
@@ -69,7 +69,7 @@ function setup_vm() {
     snip_configure_the_virtual_machine_1
     snip_configure_the_virtual_machine_2
     # TODO: we should probably have a better way to get the debian package
-    curl -LO https://storage.googleapis.com/istio-build/dev/1.13-alpha.5698d7291554bad89fd9282dbc718c1c25be2982/deb/istio-sidecar.deb
+    curl -LO https://storage.googleapis.com/istio-build/dev/${TAG}/deb/istio-sidecar.deb
     sudo dpkg -i istio-sidecar.deb
     snip_configure_the_virtual_machine_5
     snip_configure_the_virtual_machine_6