ci: add semantic pull request action

Author: helder-moreira

.github/workflows/docker-image.yml renamed to .github/workflows/release-docker.yml

@@ -1,4 +1,4 @@
-name: ci
+name: Build docker image
 
 on:
   push:
@@ -19,10 +19,14 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Get version
+        id: get_version
+        uses: battila7/get-version-action@v2
+
       - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v2
         with:
           push: true
           platforms: linux/amd64,linux/arm64
-          tags: ghcr.io/tendermint/faucet:latest,ghcr.io/tendermint/faucet:${GITHUB_REF#refs/*/}
+          tags: ghcr.io/tendermint/faucet:latest,ghcr.io/tendermint/faucet:${{ steps.get_version.outputs.version-without-v }}

.github/workflows/semantic-pull-request.yml

@@ -0,0 +1,14 @@
+name: "Semantic PR"
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v1.2.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}