OSM vector tile server setup with postgis and tegola

- Set up docker-compose with PostgreSQL/PostGIS and Tegola services
- Added initialization scripts for database setup and OSM data import
- Configured Tegola with vector tile layers for roads and buildings
- Included README with setup instructions and troubleshooting guide

init-scripts/01-init-database.sql

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+-- Initialize OSM database with PostGIS and hstore extensions
+-- This script runs automatically when PostgreSQL container starts for the first time
+
+-- Connect to the osm database
+\c osm;
+
+-- Enable PostGIS extension
+CREATE EXTENSION IF NOT EXISTS postgis;
+CREATE EXTENSION IF NOT EXISTS postgis_topology;
+
+-- Enable hstore extension for key-value storage
+CREATE EXTENSION IF NOT EXISTS hstore;
+
+-- Grant necessary permissions
+GRANT ALL PRIVILEGES ON DATABASE osm TO postgres;
+GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO postgres;
+GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO postgres;
+
+-- Set up proper ownership
+ALTER DATABASE osm OWNER TO postgres;
+
+-- Display confirmation
+SELECT 'OSM database initialized successfully with PostGIS and hstore extensions' AS status;

init-scripts/02-install-osm2pgsql.sh

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+#!/bin/bash
+# Install osm2pgsql and required tools
+# This script runs during PostgreSQL container initialization
+
+set -e
+
+echo "Installing osm2pgsql and dependencies..."
+
+# Update package list
+apt-get update
+
+# Install required packages
+apt-get install -y \
+    osm2pgsql \
+    wget \
+    curl \
+    unzip \
+    ca-certificates \
+    --no-install-recommends
+
+# Clean up to reduce image size
+apt-get clean
+rm -rf /var/lib/apt/lists/*
+
+echo "osm2pgsql installation completed successfully"
+
+# Verify installation
+osm2pgsql --version

init-scripts/03-download-import-osm.sh

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+#!/bin/bash
+# Download and import OSM data for Bosnia and Herzegovina
+# This script runs during PostgreSQL container initialization
+
+set -e
+
+echo "Starting OSM data download and import process..."
+
+# Configuration
+OSM_URL="https://download.geofabrik.de/europe/bosnia-herzegovina-latest.osm.pbf"
+OSM_FILE="/osm-data/bosnia-herzegovina-latest.osm.pbf"
+DB_NAME="osm"
+DB_USER="postgres"
+DB_HOST="127.0.0.1"
+DB_PORT="5432"
+
+# Wait for PostgreSQL to be ready
+echo "Waiting for PostgreSQL to be ready..."
+until pg_isready -h $DB_HOST -p $DB_PORT -U $DB_USER -d $DB_NAME; do
+    echo "PostgreSQL is not ready yet, waiting..."
+    sleep 5
+done
+
+echo "PostgreSQL is ready, proceeding with OSM data processing..."
+
+# Download OSM data if not already present
+if [ ! -f "$OSM_FILE" ]; then
+    echo "Downloading OSM data from $OSM_URL..."
+    wget -O "$OSM_FILE" "$OSM_URL"
+    echo "Download completed successfully"
+else
+    echo "OSM file already exists, skipping download"
+fi
+
+# Verify file was downloaded successfully
+if [ ! -f "$OSM_FILE" ]; then
+    echo "Error: OSM file not found after download attempt"
+    exit 1
+fi
+
+echo "OSM file size: $(du -h $OSM_FILE | cut -f1)"
+
+# Import data using osm2pgsql
+echo "Starting OSM data import with osm2pgsql..."
+
+# osm2pgsql command with optimized settings for vector tiles
+osm2pgsql \
+    --create \
+    --database $DB_NAME \
+    --username $DB_USER \
+    --host $DB_HOST \
+    --port $DB_PORT \
+    --hstore \
+    --style /usr/share/osm2pgsql/default.style \
+    --multi-geometry \
+    --number-processes 2 \
+    --cache 512 \
+    --flat-nodes /osm-data/nodes.cache \
+    "$OSM_FILE"
+
+echo "OSM data import completed successfully"
+
+# Verify import by checking table counts
+echo "Verifying import - checking table row counts:"
+psql -h $DB_HOST -p $DB_PORT -U $DB_USER -d $DB_NAME -c "
+    SELECT 
+        'planet_osm_point' as table_name, count(*) as row_count 
+    FROM planet_osm_point 
+    UNION ALL 
+    SELECT 
+        'planet_osm_line' as table_name, count(*) as row_count 
+    FROM planet_osm_line 
+    UNION ALL 
+    SELECT 
+        'planet_osm_polygon' as table_name, count(*) as row_count 
+    FROM planet_osm_polygon 
+    UNION ALL 
+    SELECT 
+        'planet_osm_roads' as table_name, count(*) as row_count 
+    FROM planet_osm_roads;
+"
+
+echo "OSM data download and import process completed successfully!"