Tags are not set correctly

[GROwen]

Describe the bug

When GitHub Actions executes the build-deploy workflow the container images should be tagged according to the expected behaviour

To Reproduce

Background (prerequisites)
Patched version of ACT
Clone this branch and run sudo make install then point the following commands and the resulting binary i.e. $HOME/go/src/github.com/nektos/act/dist/local/act

Testing workflow event files
Execute the build-deploy workflow

workflow-dispatch.yml

{
  "inputs": null,
  "ref": "5.x",
  "repo": "dpc-sdp/bay",
  "sender": "GROwen",
  "workflow": "test-context-values"
}

pull_request.json

{
  "pull_request": {
    "head": {
      "ref": "build/DDS-1723--sample"
    },
    "base": {
      "ref": "5.x"
    },
    "merged": false
  }
}

Steps to reproduce the behavior:

Execute the following commands adjusting the inputs based on the scenario

$HOME/go/src/github.com/nektos/act/dist/local/act workflow_dispatch -W .github/workflows/build-deploy.yml --defaultbranch "5.x" --actor "GROwen" -s GITHUB_TOKEN --var BRANCHES='["5.x"]' --var IMAGES='["ci-builder"]' --env REGISTRY=ghcr.io --container-architecture linux/amd64 --rm -P ubuntu-latest=catthehacker/ubuntu:act-latest -e .github/pull_request.json

You can also use the test-context-values.yml to check the GitHub context (ghc) that act computes for each run.

---
test-context-values.yml

name: test-context-values
run-name: Test cases for workflow triggers
on:
  pull_request:
    types:
      - closed
      - opened
      - synchronize
  schedule:
    - cron: '23 20 * * 0'
  workflow_dispatch:
jobs:
  github_context:
    runs-on: ubuntu-latest
    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"

Expected behavior

Scenarios

item	workflow trigger	Event	Expected tag	Notes
1	pull_request	opened	pr-86
2	pull_request	synchronize	pr-86
3	pull_request	closed	base branch GITHUB_REF i.e. 5.x	Future state: delete pr tag
4	schedule		Default branch GITHUB_REF i.e. 5.x
5	workflow_dispatch	workflow_dispatch - request specifics - create-a-workflow-dispatch-event	GITHUB_REF i.e. 5.x

Additional context

Add any other context about the problem here.