From 2975d487e4b4d4c81249cdf4c16c37467c79d882 Mon Sep 17 00:00:00 2001
From: Aaron Brethorst <aaron@brethorsting.com>
Date: Sat, 25 Jan 2025 14:06:30 -0800
Subject: [PATCH] Push up a `latest` tag to Docker Hub for each OBA image
 version

E.g. you can use `2.5.13-otsf-latest` instead of having to hardcode the specific Docker image version.
---
 .github/workflows/docker.yaml | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index 7bd2e6a..799c083 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -67,8 +67,12 @@ jobs:
           - name: onebusaway-api-webapp
             context: oba
     steps:
-      - name: Compute image tag name
-        run: echo "IMAGE_TAG=$(echo $GITHUB_REF_NAME)" >> $GITHUB_ENV
+      - name: Compute image tag names
+        run: |
+          # Set the full version tag (e.g., 2.5.13-otsf-v5.0.0)
+          echo "IMAGE_TAG=$(echo $GITHUB_REF_NAME)" >> $GITHUB_ENV
+          # Extract the software version (e.g., 2.5.13-otsf) and add -latest
+          echo "LATEST_TAG=$(echo $GITHUB_REF_NAME | sed 's/-v[0-9]\+\.[0-9]\+\.[0-9]\+/-latest/')" >> $GITHUB_ENV
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Set up QEMU
@@ -98,3 +102,4 @@ jobs:
           push: true
           tags: |
             opentransitsoftwarefoundation/${{ matrix.name }}:${{ env.IMAGE_TAG }}
+            opentransitsoftwarefoundation/${{ matrix.name }}:${{ env.LATEST_TAG }}