feat(deploy): add envsubst-based deployment script

ci/scripts/deploy-new-tags.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -e
+
+# Get the directory where the script is located
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DEPLOY_DIR="$(cd "$SCRIPT_DIR/../deploy" && pwd)"
+
+echo "Starting deployment for com-ermnvldmr..."
+
+# Export current tags if they exist in .env to ensure continuity for services NOT being updated
+if [ -f "$DEPLOY_DIR/.env" ]; then
+    export $(grep -v '^#' "$DEPLOY_DIR/.env" | xargs)
+fi
+
+# Override with new tags provided via env (passed from GitHub)
+# The variables DOCS_TAG and WWW_TAG should already be in the environment
+
+# Generate new .env from template
+echo "Generating .env from template..."
+envsubst < "$DEPLOY_DIR/.env.template" > "$DEPLOY_DIR/.env"
+
+# Run Docker Compose
+cd "$DEPLOY_DIR"
+echo "Pulling images..."
+docker compose pull
+
+echo "Starting containers..."
+docker compose up -d --remove-orphans
+
+echo "Deployment complete."