Allow passing GITHUB_TOKEN to install script

install_linux.sh

@@ -35,9 +35,13 @@ echo "os=$os"
 echo -e "\n\n===================================================="
 
 get_latest_release() {
-  curl --fail -sS "https://api.github.com/repos/terraform-linters/tflint/releases/latest" | # Get latest release from GitHub api
-    grep '"tag_name":' |                                                                  # Get tag line
-    sed -E 's/.*"([^"]+)".*/\1/'                                                          # Pluck JSON value
+  headers=()
+  if [ -n "${GITHUB_TOKEN}" ]; then
+      headers=(-H "Authorization: Bearer ${GITHUB_TOKEN}")
+  fi
+  curl --fail -sS "${headers[@]}" "https://api.github.com/repos/terraform-linters/tflint/releases/latest" | # Get latest release from GitHub api
+    grep '"tag_name":' |                                                                                    # Get tag line
+    sed -E 's/.*"([^"]+)".*/\1/'                                                                            # Pluck JSON value
 }
 
 download_path=$(mktemp -d -t tflint.XXXXXXXXXX)
@@ -46,6 +50,9 @@ download_executable="${download_path}/tflint"
 
 if [ -z "${TFLINT_VERSION}" ] || [ "${TFLINT_VERSION}" == "latest" ]; then
   echo "Looking up the latest version ..."
+  if [ -n "${GITHUB_TOKEN}" ]; then
+    echo "Requesting with GITHUB_TOKEN ..."
+  fi
   version=$(get_latest_release)
 else
   version=${TFLINT_VERSION}