dynamically set packer vars from fatimage workflow

Author: bertiethorpe

.github/workflows/fatimage.yml

@@ -64,7 +64,23 @@ jobs:
           . environments/.stackhpc/activate
           cd packer/
           packer init .
-          PACKER_LOG=1 packer build -on-error=${{ vars.PACKER_ON_ERROR }} -only=${{ matrix.build }} -var-file=$PKR_VAR_environment_root/${{ vars.CI_CLOUD }}.pkrvars.hcl openstack.pkr.hcl
+
+          SOURCE_IMAGE_NAME="${{ matrix.build }}-${{ matrix.os_version }}-latest"
+          IMAGE_NAME="${{ matrix.build }}-${{ matrix.os_version }}-latest"
+          
+          PACKER_CMD="PACKER_LOG=1 packer build \
+          -on-error=${{ vars.PACKER_ON_ERROR }} \
+          -only=${{ matrix.build }} \
+          -var-file=$PKR_VAR_environment_root/${{ vars.CI_CLOUD }}.pkrvars.hcl \
+          openstack.pkr.hcl"
+
+          if [ "${{ github.event_name }}" != "schedule" ]; then
+            PACKER_CMD="$PACKER_CMD -var source_image_name=$SOURCE_IMAGE_NAME"
+          else
+            PACKER_CMD="$PACKER_CMD -var image_name=$IMAGE_NAME"
+          fi
+
+          eval $PACKER_CMD
         env:
           PKR_VAR_os_version: ${{ matrix.os_version }}
 

.github/workflows/imagebuild.yml

@@ -186,7 +186,7 @@ source "openstack" "openhpc" {
   # Output image:
   image_disk_format = "qcow2"
   image_visibility = var.image_visibility
-  image_name = "${source.name}-${var.os_version}-latest"
+  image_name = "${source.name}-${var.os_version}-${local.timestamp}-${substr(local.git_commit, 0, 8)}"
 }
 
 build {