update formatting (#76)

* update formatting

* cleanup shellcheck errors

entrypoint.sh

@@ -7,21 +7,21 @@ set -eu
 
 write_file() {
   {
-    echo "${FIRST_LINE}"
-    echo "// Created by make-go-github-file.yaml on $(date)"
-    echo "//"
-    echo "//lint:file-ignore U1000 Ignore all unused code, it's generated"
-    echo "package ${INPUT_PACKAGE}"
-    echo ""
-    echo "var ("
-    echo "\tgithubDate           string = \"${RELEASE_DATE}\""
-    echo "\tgithubIteration      string = \"${RELEASE_ITERATION}\""
-    echo "\tgithubRef            string = \"refs/tags/${NEXT_VERSION}\""
-    echo "\tgithubRefName        string = \"${NEXT_VERSION}\""
-    echo "\tgithubRepository     string = \"${GITHUB_REPOSITORY}\""
-    echo "\tgithubRepositoryName string = \"${RELEASE_REPOSITORY_NAME}\""
-    echo "\tgithubVersion        string = \"${NEXT_VERSION}\""
-    echo ")"
+    printf "%s\n" "${FIRST_LINE}"
+    printf "// Created by make-go-github-file.yaml on %s\n" "$(date)"
+    printf "//\n"
+    printf "//lint:file-ignore U1000 Ignore all unused code, it's generated\n"
+    printf "package %s\n" "${INPUT_PACKAGE}"
+    printf "\n"
+    printf "var (\n"
+    printf "\tgithubDate           string = \"%s\"\n" "${RELEASE_DATE}"
+    printf "\tgithubIteration      string = \"%s\"\n" "${RELEASE_ITERATION}"
+    printf "\tgithubRef            string = \"refs/tags/%s\"\n" "${NEXT_VERSION}"
+    printf "\tgithubRefName        string = \"%s\"\n" "${NEXT_VERSION}"
+    printf "\tgithubRepository     string = \"%s\"\n" "${GITHUB_REPOSITORY}"
+    printf "\tgithubRepositoryName string = \"%s\"\n" "${RELEASE_REPOSITORY_NAME}"
+    printf "\tgithubVersion        string = \"%s\"\n" "${NEXT_VERSION}"
+    printf ")\n"
   } >> "${OUTFILE}"
 }