Add body_file input

Allows to use a custom file as PR body
Addresses #136

Makefile

@@ -2,7 +2,7 @@
 phony: help
 
 # Release tag for the action
-VERSION := v0.5.5
+VERSION := v0.6.0
 
 # GitHub Actions bogus variables
 GITHUB_REF ?= refs/heads/null

action.yml

@@ -25,6 +25,10 @@ inputs:
     description: Pull request body
     required: false
     default: ""
+  body_file:
+    description: File to be used as pull request body
+    required: false
+    default: ""
   reviewer:
     description: Reviewer's username
     required: false
@@ -69,7 +73,7 @@ outputs:
     description: Pull request URL.
 runs:
   using: docker
-  image: docker://devopsinfra/action-pull-request:v0.5.5
+  image: docker://devopsinfra/action-pull-request:v0.6.0
   env:
     GITHUB_TOKEN: ${{ inputs.github_token }}
 branding:

entrypoint.sh

@@ -11,6 +11,7 @@ echo "  target_branch: ${INPUT_TARGET_BRANCH}"
 echo "  title: ${INPUT_TITLE}"
 echo "  template: ${INPUT_TEMPLATE}"
 echo "  body: ${INPUT_BODY}"
+echo "  body_file: ${INPUT_BODY_FILE}"
 echo "  reviewer: ${INPUT_REVIEWER}"
 echo "  assignee: ${INPUT_ASSIGNEE}"
 echo "  label: ${INPUT_LABEL}"
@@ -174,7 +175,11 @@ if [[ -z "${PR_NUMBER}" ]]; then
   PR_NUMBER=$(gh pr view --json number -q .number "${URL}")
 else
   echo -e "\nUpdating pull request"
-  COMMAND="hub api --method PATCH repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER} --field 'body=@/tmp/template'"
+  if [[ -z "${INPUT_BODY_FILE}" ]]; then
+    COMMAND="hub api --method PATCH repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER} --field 'body=@/tmp/template'"
+  else
+    COMMAND="hub api --method PATCH repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER} --field 'body=@${INPUT_BODY_FILE}'"
+  fi
   echo -e "Running: ${COMMAND}"
   URL=$(sh -c "${COMMAND} | jq -r '.html_url'")
   # shellcheck disable=SC2181