add ci/cd workflow

.forgejo/workflows/image.yaml

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+# SPDX-FileCopyrightText: 2025 Ncam Gnrvngu <info@ncamgnrvngu.eu>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    runs-on: docker
+    container:
+      image: docker:dind
+    steps:
+      - run: |
+          git clone https://NcamGnrvngu:${{ github.token }}@git.ncamgnrvngu.eu/NcamGnrvngu/website.git 
+          cd website
+      - run: docker login git.ncamgnrvngu.eu --username ncamgnrvngu --password ${{ secrets.DOCKER_TOKEN }}
+      - run: docker build . -t git.ncamgnrvngu.eu/ncamgnrvngu/website:latest --push

Dockerfile

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+# SPDX-FileCopyrightText: 2025 Ncam Gnrvngu <info@ncamgnrvngu.eu>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+FROM ghcr.io/getzola/zola:v0.20.0 AS zola
+
+WORKDIR /project
+COPY . /project
+RUN ["zola", "build"]
+
+FROM nginx:latest
+WORKDIR /usr/share/nginx/html
+COPY --from=zola /project/public .
+