Gitlab Community Edition is definitely a viable option that meets your need. Especially if you want issue tracking, simple project management and CI all in one package. Lately GitLab CE is becoming a larger, more resource intensive product as they add these new features. Integrations with external tools such as Jenkins are often not as seamless as they are with Bitbucket server, GitHub or Bitbucket.org.
You could also consider Bitbucket server, it's $10 for a 10 user license. If you're familiar with the UI then it may work for you. The plugin eco-system is considerable, with many plugins to meet your needs.
Gogs is also worth considering.