feat: add workflow_dispatch to Docker workflow for manual triggers (#358)

Allows manual triggering of Docker builds when automatic tag triggers fail.
This is useful when GitHub Actions doesn't process tag push events correctly.

Author: joshrotenberg

.github/workflows/docker.yml

@@ -4,6 +4,7 @@ on:
   push:
     tags:
       - "v*"
+  workflow_dispatch:
 
 env:
   REGISTRY: docker.io
@@ -23,7 +24,16 @@ jobs:
       - name: Extract version
         id: version
         run: |
-          VERSION=${GITHUB_REF#refs/tags/v}
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            # For manual dispatch, use the current ref name or latest tag
+            if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
+              VERSION=${GITHUB_REF#refs/tags/v}
+            else
+              VERSION=$(git describe --tags --abbrev=0 2>/dev/null | sed 's/^v//' || echo "0.0.0")
+            fi
+          else
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
           echo "version=$VERSION" >> $GITHUB_OUTPUT
           echo "major=$(echo $VERSION | cut -d. -f1)" >> $GITHUB_OUTPUT
           echo "minor=$(echo $VERSION | cut -d. -f1-2)" >> $GITHUB_OUTPUT