postgres shadow

Dockers/postgres-shadow/Dockerfile

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+FROM postgres:15
+
+# Install additional tools
+RUN apt-get update && apt-get install -y \
+    postgresql-client \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create directory for scripts
+RUN mkdir -p /docker-entrypoint-initdb.d
+
+# Copy initialization script
+COPY init.sh /docker-entrypoint-initdb.d/
+RUN chmod +x /docker-entrypoint-initdb.d/init.sh
+
+# Environment variables
+ENV SOURCE_DB_URL=""
+ENV TARGET_DB_NAME="shadow_db"
+
+# Expose PostgreSQL port
+EXPOSE 5432

Dockers/postgres-shadow/init.sh

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+#!/bin/bash
+set -e
+
+# Wait for PostgreSQL to be ready
+until pg_isready; do
+    echo "Waiting for PostgreSQL to be ready..."
+    sleep 2
+done
+
+# Create the target database
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+    CREATE DATABASE $TARGET_DB_NAME;
+EOSQL
+
+# Copy the database if SOURCE_DB_URL is provided
+if [ ! -z "$SOURCE_DB_URL" ]; then
+    echo "Copying database from $SOURCE_DB_URL to $TARGET_DB_NAME..."
+
+    # Dump the source database
+    pg_dump "$SOURCE_DB_URL" | psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$TARGET_DB_NAME"
+
+    echo "Database copy completed successfully"
+else
+    echo "No SOURCE_DB_URL provided, skipping database copy"
+fi