add build script, update readme

.forgejo/workflows/build.yml

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+name: Build And Publish Docker
+
+on:
+  workflow_dispatch
+
+jobs:
+  build:
+    container:
+      image: node:lts-bookworm
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: 'true'
+          
+      - name: Install deps
+        run: curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh && apt update && apt install -y jq
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@master
+
+      - name: Login to Self-Hosted Registry
+        uses: docker/login-action@v3
+        with:
+          registry: fung.uy
+          username: ${{ secrets.MYCO_REGISTRY_USER }}
+          password: ${{ secrets.MYCO_PERSONAL_ACCESS_TOKEN }}
+
+      - name: Get tags from GitLab repository
+        id: get_tags
+        run: |
+          TAGS=$("https://framagit.org/api/v4/projects/74246/repository/tags" | jq -r '.[].name')
+          echo "::set-output name=tags::$TAGS"
+
+      - name: Filter out RC tags and get the latest version
+        id: filter_tags
+        run: |
+          TAGS="${{ steps.get_tags.outputs.tags }}"
+          FILTERED_TAGS=$(echo "$TAGS" | grep -Ev 'RC[0-9]$' | sort -V | tail -n 1)
+          echo "Latest tag excluding RC: $FILTERED_TAGS"
+          echo "::set-output name=latest_tag::$FILTERED_TAGS"
+
+      - name: Build and Push with Latest Tag
+        uses: docker/build-push-action@v4
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          context: ./aktivisda/server
+          file: ./aktivisda/server/Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: fung.uy/mirrors/aktivisda:${{ steps.filter_tags.outputs.latest_tag }}

.gitmodules

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+[submodule "aktivisda"]
+	path = aktivisda
+	url = https://framagit.org/aktivisda/aktivisda.git

README.md

@@ -1 +1 @@
-aslkdj
+docker build for aktivisda

aktivisda

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+Subproject commit 1e10537f77a7a40f8a092eb5da924255a62683e2