actions: Fix workflow_dispatch (#48330)

When this was added in #46895, it didn't add handling of the event.

Author: anomiex

.github/workflows/build-docker-monorepo.yml

@@ -61,6 +61,14 @@ jobs:
           elif [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]; then
             gh_set_output tags "type=ref,event=pr"
             gh_set_output images "ghcr.io/automattic/jetpack-monorepo"
+          elif [[ "$GITHUB_EVENT_NAME" == "workflow_dispatch" ]]; then
+            if [[ "$GITHUB_REF" == "refs/heads/trunk" ]]; then
+              gh_set_output tags "type=raw,latest"
+              gh_set_output images $'automattic/jetpack-wordpress-dev\nghcr.io/automattic/jetpack-wordpress-dev'
+            else
+              echo "Workflow dispatch for non-trunk ref $GITHUB_REF is not supported"
+              exit 1
+            fi
           else
             echo "Unknown GITHUB_EVENT_NAME $GITHUB_EVENT_NAME"
             exit 1

.github/workflows/build-docker.yml

@@ -63,6 +63,14 @@ jobs:
           elif [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]; then
             gh_set_output tags "type=ref,event=pr"
             gh_set_output images "ghcr.io/automattic/jetpack-wordpress-dev"
+          elif [[ "$GITHUB_EVENT_NAME" == "workflow_dispatch" ]]; then
+            if [[ "$GITHUB_REF" == "refs/heads/trunk" ]]; then
+              gh_set_output tags "type=raw,latest"
+              gh_set_output images $'automattic/jetpack-wordpress-dev\nghcr.io/automattic/jetpack-wordpress-dev'
+            else
+              echo "Workflow dispatch for non-trunk ref $GITHUB_REF is not supported"
+              exit 1
+            fi
           else
             echo "Unknown GITHUB_EVENT_NAME $GITHUB_EVENT_NAME"
             exit 1