Add GIT_COMMIT long to Dockerfile
Add GIT_COMMIT long to Dockerfile

mozmar/snippets-service,mozmar/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service