reset_testnet.sh: `make build` moved earlier [skip ci]

scripts/reset_testnet.sh

@@ -69,6 +69,9 @@ fi
 
 cd docker
 
+echo "Building Docker image..."
+make build
+
 $DOCKER_BEACON_NODE makeDeposits \
   --quickstart-deposits=$QUICKSTART_VALIDATORS \
   --random-deposits=$RANDOM_VALIDATORS \
@@ -125,9 +128,6 @@ if [[ $PUBLISH_TESTNET_RESETS != "0" ]]; then
   popd
 fi
 
-echo "Building Docker image..."
-make build
-
 echo "Publishing Docker image..."
 make push-last