diff --git a/install.sh b/install.sh
index 155f534..61f22d2 100644
--- a/install.sh
+++ b/install.sh
@@ -2,6 +2,7 @@
 set -euo pipefail
 
 CATALOG_URL=${XYMEDIA_CATALOG_URL:-https://git.keeper.work/admin/xymediavault-releases/raw/branch/main/catalog-v1.json}
+RELEASE_BASE=${XYMEDIA_RELEASE_BASE:-https://git.keeper.work/admin/xymediavault-releases/raw/branch/main}
 SCRIPT_DIR=$(cd -- "$(dirname -- "$0")" && pwd -P)
 INSTALL_DIR=/opt/xymediavault
 PG_HOST=postgres
@@ -56,6 +57,20 @@ else
   fi
 fi
 chmod 600 "$PG_PASSWORD_FILE"
+TEMPLATE_DIR="$INSTALL_DIR/bootstrap"
+mkdir -p "$TEMPLATE_DIR"
+template_file() {
+  local name=$1 local_file="$SCRIPT_DIR/$1" downloaded="$TEMPLATE_DIR/$1"
+  if [[ -f $local_file ]]; then
+    printf '%s\n' "$local_file"
+    return 0
+  fi
+  curl --fail --silent --show-error --location --proto '=https' --tlsv1.2 "$RELEASE_BASE/$name" -o "$downloaded"
+  printf '%s\n' "$downloaded"
+}
+CONFIG_TEMPLATE=$(template_file config.yaml)
+COMPOSE_TEMPLATE=$(template_file compose.yaml)
+DOCKERFILE_TEMPLATE=$(template_file Dockerfile.bootstrap)
 umask 077
 printf 'XYMEDIA_INSTALL_DIR=%s\nXYMEDIA_POSTGRES_HOST=%s\nXYMEDIA_POSTGRES_PORT=%s\nXYMEDIA_POSTGRES_DATABASE=%s\nXYMEDIA_POSTGRES_USER=%s\nXYMEDIA_API_PORT=%s\nXYMEDIA_WEBDAV_PORT=%s\nXYMEDIA_TVBOX_PORT=%s\n' "$INSTALL_DIR" "$PG_HOST" "$PG_PORT" "$PG_DB" "$PG_USER" "$API_PORT" "$WEBDAV_PORT" "$TVBOX_PORT" >"$INSTALL_DIR/.env"
 curl --fail --silent --show-error --location --proto '=https' --tlsv1.2 "$CATALOG_URL" -o "$INSTALL_DIR/catalog-v1.json"
@@ -126,7 +141,7 @@ if (( ! SKIP_COMPONENTS )); then
     cp "$archive" "$INSTALL_DIR/components/$component.tar.zst"
   done
 fi
-PG_HOST="$PG_HOST" PG_PORT="$PG_PORT" PG_DB="$PG_DB" PG_USER="$PG_USER" python3 - "$SCRIPT_DIR/config.yaml" "$INSTALL_DIR/config.yaml" <<'PY'
+PG_HOST="$PG_HOST" PG_PORT="$PG_PORT" PG_DB="$PG_DB" PG_USER="$PG_USER" python3 - "$CONFIG_TEMPLATE" "$INSTALL_DIR/config.yaml" <<'PY'
 import os, pathlib, sys
 template, output = map(pathlib.Path, sys.argv[1:])
 values = {
@@ -140,7 +155,7 @@ for placeholder, value in values.items():
     content = content.replace(placeholder, value)
 output.write_text(content)
 PY
-cp "$SCRIPT_DIR/compose.yaml" "$SCRIPT_DIR/Dockerfile.bootstrap" "$INSTALL_DIR/"
+cp "$COMPOSE_TEMPLATE" "$DOCKERFILE_TEMPLATE" "$INSTALL_DIR/"
 if [[ ! -f "$INSTALL_DIR/.bootstrap-dockerfile.sha256" || "$(sha256sum "$INSTALL_DIR/Dockerfile.bootstrap" | cut -d' ' -f1)" != "$(<"$INSTALL_DIR/.bootstrap-dockerfile.sha256")" ]]; then
   "${COMPOSE[@]}" --project-directory "$INSTALL_DIR" --env-file "$INSTALL_DIR/.env" -f "$INSTALL_DIR/compose.yaml" build app
   sha256sum "$INSTALL_DIR/Dockerfile.bootstrap" | cut -d' ' -f1 >"$INSTALL_DIR/.bootstrap-dockerfile.sha256"