Get Latest Commit

A simple Github action to get the latest commit hash and description from another repository. No authentication required. This is adapted from pozetroninc/github-action-get-latest-release because the repo I was automating builds for do not create releases and I need to tag my docker builds.

Configuration

Example Repository - https://github.com/nmbgeek/github-action-get-latest-commit

Inputs

Name	Description	Example
owner	The Github user or organization that owns the repository	nmbgeek
repo	The repository name	github-action-get-latest-commit

or

Name	Description	Example
repository	The repository name in full	nmbgeek/github-action-get-latest-commit

Additional Inputs (Optional)

Name	Description	Example
branch	Specify branch. If blank the default branch, usually main, will be used.
token	GitHub token or personal access token	${{ secrets.GITHUB_TOKEN }} or ${{ secrets.PERSONAL_ACCESS_TOKEN }}

Using the GITHUB_TOKEN will avoid the action failing due to hitting API rate limits from the IP address of the GitHub runner your action is running on. Using a PERSONAL_ACCESS_TOKEN is required to get the release information from a private repo. You can read about how to create a personal access token here and how to add this as a repository secret here.

Outputs

Name	Description	Example
shorthash	First 7 of the commit's hash	0bd441a
hash	Full sha hash for commit	0bd441a8a1d62dc22fb3704...
description	Commit message	This is an example commit

Usage Example

name: Docker Build and Push

on:
  repository_dispatch:
    types: [build-docker-image]
  workflow_dispatch:

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - id: lastcommit
        uses: nmbgeek/github-action-get-latest-commit@main
        with:
          owner: abtassociates
          repo: eva
          branch: main

      - name: set release date
        run: |
          echo "RELEASE_DATE=$(date --rfc-3339=date)" >> ${GITHUB_ENV}

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          push: true
          tags: nmbgeek/eva-hud-hmis:latest, nmbgeek/eva-hud-hmis:${{ env.RELEASE_DATE }}, nmbgeek/eva-hud-hmis:${{ steps.lastcommit.outputs.shorthash }}

To use the current repo:

with:
  repository: ${{ github.repository }}

To use authentication token:

with:
  token: ${{ secrets.GITHUB_TOKEN }}