🔨 Add custom entrypoint script to copy initial data

Dockerfile

@@ -1,15 +1,15 @@
 FROM ubuntu:24.04 as build
-
-RUN apt-get update -y && apt-get install -y \
-    build-essential \
-    git \
-    curl
-
+RUN apt-get update -y && apt-get install -y build-essential git curl
 WORKDIR /opt
 RUN sh -c "$(curl --location https://taskfile.dev/install.sh)" -- -d
 COPY . .
-ENV GEOSERVER_DATA_DIR /opt/geoserver/data_dir
-RUN GEOSERVER_DATA_DIR="${GEOSERVER_DATA_DIR}" ./bin/task download-geoserver-data
+ENV INIT_DATA_DIR /opt/init_data
+RUN GEOSERVER_DATA_DIR="${INIT_DATA_DIR}" ./bin/task download-geoserver-data
 
 FROM kartoza/geoserver:2.24.2 as geoserver
-COPY --from=build /opt/geoserver/data_dir /opt/geoserver/data_dir
+RUN apt-get update -y && apt-get install --no-install-recommends -y rsync
+ENV INIT_DATA_DIR /opt/init_data
+ENV GEOSERVER_DATA_DIR /opt/geoserver/data_dir
+COPY --from=build ${INIT_DATA_DIR} ${INIT_DATA_DIR}
+COPY custom-entrypoint.sh /scripts/custom-entrypoint.sh
+ENTRYPOINT ["/bin/bash", "/scripts/custom-entrypoint.sh"]

custom-entrypoint.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -x
+
+: ${INIT_DATA_DIR:?} || exit 1
+: ${GEOSERVER_DATA_DIR:?} || exit 1
+
+# Ensure the GeoServer data directory exists
+mkdir -p ${GEOSERVER_DATA_DIR}
+
+echo "Copying initial data from ${INIT_DATA_DIR} to ${GEOSERVER_DATA_DIR}"
+
+# The -a option stands for "archive", which means it preserves the files' attributes
+# The -v option stands for "verbose"
+# The --ignore-existing option tells rsync to skip updating files that already exist in the destination directory
+rsync -av --ignore-existing ${INIT_DATA_DIR}/ ${GEOSERVER_DATA_DIR}/
+
+set +x
+
+# Delegate to the original entrypoint
+# https://github.com/kartoza/docker-geoserver/blob/develop/scripts/entrypoint.sh
+exec /scripts/entrypoint.sh "$@"