fix: Renamed .gitea/workflows/docker.yaml to .gitea/workflows/build-container-image.yaml and updated README badge URL accordingly.

.gitea/workflows/build-container-image.yaml

@@ -0,0 +1,52 @@
+name: Build Docker Container
+run-name: ${{ gitea.actor }} is building container
+on: [push]
+
+jobs:
+  Build-Container-Image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            gitea.example.com/xyz/alpine
+          tags: |
+            type=schedule,pattern={{date 'YYYYMMDDHHMM'}}
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha
+
+      - name: Set up Docker Context for Buildx
+        id: buildx-context
+        run: |
+          export DOCKER_HOST=tcp://docker:2376/
+          export DOCKER_TLS_CERTDIR="/certs"
+          export DOCKER_TLS_VERIFY=1
+          export DOCKER_CERT_PATH="/certs/client"
+          docker context create builders
+
+      - name: Setup Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          # buildkitd-flags: --debug
+          endpoint: builders
+        env:
+          DOCKER_HOST: "tcp://docker:2376/"
+          DOCKER_TLS_CERTDIR: "/certs"
+          DOCKER_TLS_VERIFY: 1
+          DOCKER_CERT_PATH: "/certs/client"
+
+      - name: Build and push the image
+        uses: docker/build-push-action@v5
+        with:
+          file: Dockerfile
+          platforms: linux/amd64
+        env:
+          DOCKER_HOST: "tcp://docker:2376/"
+          DOCKER_TLS_CERTDIR: "/certs"
+          DOCKER_TLS_VERIFY: 1
+          DOCKER_CERT_PATH: "/certs/client"