Build SOLR Docker image

.github/workflows/docker.yaml

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+name: Build & Push to GHCR
+
+on:
+  workflow_dispatch:
+  push:
+    # tags:
+    #   - 'v*'
+    #   - '!v*-alpha*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract version & image name
+        id: vars
+        run: |
+          if [[ "${GITHUB_REF_TYPE}" == "tag" ]]; then
+            raw_tag="${GITHUB_REF#refs/tags/}"
+            version="${raw_tag#v}"
+          else
+            # ----- Branch / PR fallback -----
+            branch="${GITHUB_REF#refs/heads/}"
+            # Replace / and uppercase chars with safe lowercase dashes
+            safe_branch=$(echo "$branch" | tr '[:upper:]/' '[:lower:]-')
+            sha=${GITHUB_SHA::8}
+            raw_tag="${safe_branch}-${sha}"
+            version="$raw_tag"
+          fi
+          image_repo="ghcr.io/${GITHUB_REPOSITORY,,}"
+          echo "raw_tag=$raw_tag"       >> "$GITHUB_OUTPUT"
+          echo "version=$version"       >> "$GITHUB_OUTPUT"
+          echo "image_repo=$image_repo" >> "$GITHUB_OUTPUT"
+
+      - name: Build & push image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            ${{ steps.vars.outputs.image_repo }}:${{ steps.vars.outputs.version }}
+            ${{ steps.vars.outputs.image_repo }}:${{ steps.vars.outputs.raw_tag }}
+            ${{ steps.vars.outputs.image_repo }}:latest
+          cache-from: type=gha
+          cache-to:   type=gha,mode=max

Dockerfile

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+# syntax=docker/dockerfile:1
+FROM solr:8.11.2
+
+USER root
+ENV IBEXA_TEMPLATE_DIR=/opt/solr/server/ibexa/template
+
+RUN mkdir -p ${IBEXA_TEMPLATE_DIR}
+COPY src/lib/Resources/config/solr/ ${IBEXA_TEMPLATE_DIR}/
+
+RUN set -eux; \
+    mkdir -p /opt/solr/server/ibexa; \
+    for f in solrconfig.xml stopwords.txt synonyms.txt; do \
+        cp /opt/solr/server/solr/configsets/_default/conf/$f ${IBEXA_TEMPLATE_DIR}/; \
+    done; \
+    cp /opt/solr/server/solr/solr.xml /opt/solr/server/ibexa/
+
+RUN sed -i.bak '/<updateRequestProcessorChain name="add-unknown-fields-to-the-schema"/,/<\/updateRequestProcessorChain>/d' \
+        ${IBEXA_TEMPLATE_DIR}/solrconfig.xml \
+    && sed -i '/<autoSoftCommit>/,/<\/autoSoftCommit>/c\<autoSoftCommit>\n  <maxTime>${solr.autoSoftCommit.maxTime:20}</maxTime>\n</autoSoftCommit>' \
+        ${IBEXA_TEMPLATE_DIR}/solrconfig.xml
+
+
+USER solr
+ENV SOLR_CORE=collection1
+CMD ["bash", "-c", "solr-precreate \"$SOLR_CORE\" \"$IBEXA_TEMPLATE_DIR\""]