Docker on Release (#31)

* Update README.md

* adding file directory to .gitignore

* cleanup file handling

* version number in docker image

* typo in Dockerfile

* version number in Dockerfile

* correct argument for docker buildflag

* missing quote

* update version vars

* Dockerfile updates

* fix release workflow

.github/workflows/publish-docker.yml

@@ -18,8 +18,8 @@ jobs:
         run: |
             if [[ -n "${{ github.event.inputs.tag }}" ]]; then
               TAG=${{ github.event.inputs.tag }}
-            elif [[ "${{ github.event.name }}" == 'release' ]]; then
-              TAG="${{ github.ref.name }}"
+            elif [[ "$GITHUB_EVENT_NAME" == 'release' ]]; then
+              TAG="$GITHUB_REF_NAME"
             else
               TAG="${{ github.base_ref }}"
             fi