* What is different GitHub Flow and Git Flow? * What is GitHub Actions? * How to write the simple workflow? * What's problem in GitHub Actions UI? * What's problem with Secrets in GitHub Actions? * How to write your first GitHub Actions and upload to the marketplace? * What's a problem with environment variables in GitHub Actions?

1. Introduction to
GitHub Actions2019/05/15
Bo-Yi Wu
https://github.com/appleboy

2. About me
• Software Engineer in Mediatek
• Member of Drone CI/CD Platform
• Member of Gitea Platform
• Member of Gin Golang Framework
• Teacher of Udemy Platform: Golang + Drone
https://blog.wu-boy.com

3. GitHub Flow
14
Develop
Git Push
Git Tag
Develop
Git Push
Git Tag
Testing
Deploy
Deploy
Deploy
Production
Staging
Production
Testing
Deploy
Staging

4. GitHub Flow + Git Flow
in opensource
https://github.com/go-gitea/gitea

5. CI/CD Platform
Drone Travis Jenkins
GitLab Circle Codeship

6. https://github.com/features/actions
Beta

7. https://github.com/marketplace?type=actions
Marketplace

8. https://developer.github.com/actions/
Developer Guide

9. Container Based
CI/CD Platform

10. Current runtime resource
• 1 virtual CPU
• Up to 3.75GB of memory
• 100GB of disk space

11. 28Events

12. Write Simple Workflow

13. |-- hello-world (repository)
| |__ .github
| |__ main.workflow
|

14. workflow "Remote ssh commands" {
on = "push"
resolves = [
"Remote ssh commands",
]
}
main.workflow

15. action "Remote ssh commands" {
uses = "appleboy/ssh-action@master"
secrets = [
"HOST",
"PASSWORD",
]
args = [
"--user", "actions",
"--script", "whoami",
]
}
main.workflow

16. https://github.com/appleboy/ssh-action/actions

17. Download the docker image for caching
Cache layer
http://bit.ly/docker-cache-build

18. Scheduling a workflow
┌───────────── minute (0 - 59)
│ ┌───────────── hour (0 - 23)
│ │ ┌───────────── day of the month (1 - 31)
│ │ │ ┌───────────── month (1 - 12 or JAN-DEC)
│ │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
* * * * *
workflow "New workflow" {
on = "schedule(*/15 * * * *)"
resolves = ["Hello World"]
}

19. What’s problem in UI?

20. You can’t see the log in progress job

21. Cancelling workflow

22. But you can’t restart the job
http://www.thebrokeagent.com/wtf-listing-description-of-the-week/

23. $ git reset —soft HEAD^
$ git commit -a -m ‘foo’
$ git push origin master -f
Restart the job

24. Secrets in Github Actions
Setting -> Secrets in left sidebar

26. action "Remote ssh commands" {
uses = "appleboy/ssh-action@master"
secrets = [
"HOST",
"PASSWORD",
]
args = [
"--user", "actions",
"--script", "whoami",
]
}
main.workflow

27. What’s problem in Secrets?

28. Don’t support
organization secrets
duplicate of secrets in many repository of organization

29. Don’t support
thirty party
secret service

30. You need to write
CLI flag in command
drone-ssh -u foo -p foopass -s whoami
drone-ssh -u bar -p barpass -s whoami

31. main.workflow
secrets = [
"PASSWORD",
]
args = [
"--user", "actions",
"--script", "whoami",
]
secrets = [
"PASSWORD",
]
args = [
"--user", "actions",
"--script", "whoami",
]
Server 01 Server 02
docker run -e PASSWORD=xxx appleboy/drone-ssh
-u actions -s whoami

32. main.workflow
secrets = [
"PASSWORD01",
]
args = [
"-p", "$PASSWORD01",
"--script", "whoami",
]
secrets = [
"PASSWORD02",
]
args = [
"-p", "$PASSWORD02",
"--script", "whoami",
]
Server 01 Server 02

33. action "Publish" {
needs = "Tag"
uses = "actions/npm@master"
args = "publish --access public"
secrets = ["NPM_AUTH_TOKEN"]
}
https://github.com/actions/npm

34. How to add multiple
auth token
of npm registry?

35. kind: pipeline
name: default
steps:
- name: build
image: appleboy/drone-ssh
environment:
USERNAME:
from_secret: username
PASSWORD:
from_secret: password

36. Creating GitHub Actions

37. |-- ssh-action (repository)
| |__ .github
| |__ main.workflow
| |__ Dockerfile
| |__ entrypoint.sh
| |__ README.md
| |__ LICENSE

38. Support any language you want

39. Dockerfile

40. FROM appleboy/drone-ssh:1.5.0-linux-amd64
# Github labels
LABEL "com.github.actions.name"="SSH Commands"
LABEL "com.github.actions.description"="some description"
LABEL "com.github.actions.icon"="terminal"
LABEL “com.github.actions.color"="gray-dark"
LABEL "repository"="https://github.com/appleboy/ssh-action"
LABEL "homepage"="https://github.com/appleboy"
LABEL "maintainer"="Bo-Yi Wu <appleboy.tw@gmail.com>"
LABEL "version"="0.0.1"
ADD entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

41. entrypoint.sh

42. #!/bin/sh
set -eu
export GITHUB="true"
sh -c "/bin/drone-ssh $*"

43. action "Tag Docker Image" {
needs = ["build"]
uses = "actions/docker/cli@master"
args = "tag hello:$GITHUB_SHA"
}

44. action "Tag Docker Image" {
needs = ["build"]
uses = "actions/docker/cli@master"
args = ["tag", "hello:$GITHUB_SHA"]
}

45. Environment variables

46. action "Hello World" {
uses = "./my-action"
env = {
FIRST_NAME = "Mona"
MIDDLE_NAME = "Lisa"
LAST_NAME = "Octocat"
}
}

47. runtime environment

48. GitHub Variable
• GITHUB_WORKFLOW
• GITHUB_ACTION
• GITHUB_EVNETNAME
• GITHUB_SHA
• GITHUB_REF

49. I don’t know how to
get the author
email, name or
commit message
Resolve this problem using GitHub API request?

50. Publishing your action
in the GitHub Marketplace

51. FROM appleboy/drone-ssh:1.5.0-linux-amd64
# Github labels
LABEL "com.github.actions.name"="SSH Commands"
LABEL "com.github.actions.description"="some description"
LABEL "com.github.actions.icon"="terminal"
LABEL “com.github.actions.color"="gray-dark"
LABEL "repository"="https://github.com/appleboy/ssh-action"
LABEL "homepage"="https://github.com/appleboy"
LABEL "maintainer"="Bo-Yi Wu <appleboy.tw@gmail.com>"
LABEL "version"="0.0.1"
ADD entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
please make sure that there is no problem with Dockerfile in LABEL

52. Create New Tag and
Publish Release

53. https://github.com/marketplace/actions/ssh-commands

54. Some action I created
• appleboy/ssh-action
• appleboy/scp-action
• appleboy/facebook-action
• appleboy/telegram-action
• appleboy/jenkins-action
• appleboy/gitlab-ci-ation
• appleboy/discord-action

55. http://bit.ly/golang-2019

56. http://bit.ly/drone-2019

57. Thank You