Simplify workflows

.github/workflows/docker.yml

@@ -67,10 +67,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Get release version
-        id: get-version
-        uses: tyrrrz/action-get-tag@v1
-
       - name: Install Docker Buildx
         uses: docker/setup-buildx-action@v2
 
@@ -86,5 +82,5 @@ jobs:
           --platform linux/amd64,linux/arm64
           --push
           --tag tyrrrz/discordchatexporter:stable
-          --tag tyrrrz/discordchatexporter:${{ steps.get-version.outputs.tag }}
+          --tag tyrrrz/discordchatexporter:${{ github.ref_name }}
           .