Merge pull request #802 from dev-hato/massongit-patch-1

READMEのコマンド修正

Author: massongit

README.md

@@ -65,7 +65,7 @@
 
     ```sh
     cd ./setup
-    TAG_NAME=$(git symbolic-ref --short HEAD | sed -e "s:/:-:g")
+    export TAG_NAME=$(git symbolic-ref --short HEAD | sed -e "s:/:-:g")
     docker-compose up -d
     cd ..
     ```
@@ -74,7 +74,7 @@
 
     ```sh
     cd ./setup
-    TAG_NAME=$(git symbolic-ref --short HEAD | sed -e "s:/:-:g")
+    export TAG_NAME=$(git symbolic-ref --short HEAD | sed -e "s:/:-:g")
     docker-compose restart
     ```