diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d4b4ec5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# Contents generated by the Python script.
+/public_data
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d164396
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,11 @@
+FROM python:3-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY ./parse_gtfs.py .
+
+CMD ["python", "parse_gtfs.py"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..dae17f1
--- /dev/null
+++ b/README.md
@@ -0,0 +1,38 @@
+# GTFS GTT Checker
+
+## Usage with Docker Compose
+
+You can execute the one-shot command with:
+
+```
+docker compose up
+```
+
+Look into the `public_data/` directory. It should contain these files:
+
+```
+$ tree public_data
+
+public_data/
+├── agency.txt.gz
+├── calendar_dates.txt.gz
+├── calendar.txt.gz
+├── fare_attributes.txt.gz
+├── fare_rules.txt.gz
+├── feed_info.txt.gz
+├── routes.txt.gz
+├── shapes.txt.gz
+├── stop_attributes.txt.gz
+├── stops.txt.gz
+├── stop_times.txt.gz
+├── timetable_pages.txt.gz
+├── timetable_stop_order.txt.gz
+├── timetables.txt.gz
+├── trips_booking.txt.gz
+├── trips.txt.gz
+├── vehicle_categories.txt.gz
+├── vehicles.txt.gz
+└── versions.json
+```
+
+The suggestion is to add the `docker compose up` in a crontab, every some minutes.
diff --git a/compose.yaml b/compose.yaml
new file mode 100644
index 0000000..2171ec4
--- /dev/null
+++ b/compose.yaml
@@ -0,0 +1,6 @@
+services:
+  gtfs-parser:
+    build: .
+    command: python parse_gtfs.py
+    volumes:
+      - ./public_data:/app/public_data
diff --git a/public_data/versions.json b/public_data/versions.json
deleted file mode 100644
index 8105e91..0000000
--- a/public_data/versions.json
+++ /dev/null
@@ -1,92 +0,0 @@
-{
-    "agency.txt": {
-        "hash": "81a082be1ae1417e66e90112e41070ab",
-        "last_modified": "2026-05-25T13:14:41+00:00",
-        "version_int": 0
-    },
-    "calendar.txt": {
-        "hash": "d9dd433a4ce48c2c45eac61c5730f9c6",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 45
-    },
-    "calendar_dates.txt": {
-        "hash": "13c12eb40ff548ac7a6173fb6979aa08",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 45
-    },
-    "fare_attributes.txt": {
-        "hash": "e205ad05d08e9ec7577543a6e63a3baf",
-        "last_modified": "2026-05-25T13:14:41+00:00",
-        "version_int": 0
-    },
-    "fare_rules.txt": {
-        "hash": "18d8f39bf420f026db5830dcba6643af",
-        "last_modified": "2026-05-25T13:14:41+00:00",
-        "version_int": 0
-    },
-    "feed_info.txt": {
-        "hash": "9cda9d84598e4b2e65e95514abd606ee",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 44
-    },
-    "routes.txt": {
-        "hash": "3ac24b68f5c23a2302f3d55721a566af",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 12
-    },
-    "shapes.txt": {
-        "hash": "dd6ee5715f302bee074792641d7de172",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 44
-    },
-    "stops.txt": {
-        "hash": "5711a150162443fe2cb8ae077aa9b1f4",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 32
-    },
-    "stop_attributes.txt": {
-        "hash": "3f96d2ff730355e2263fcf2517340eae",
-        "last_modified": "2026-08-02T01:14:31+00:00",
-        "version_int": 6
-    },
-    "stop_times.txt": {
-        "hash": "ef3ef312f242cd9591db7b5576dcc49a",
-        "last_modified": "2026-08-29T04:19:36+00:00",
-        "version_int": 45
-    },
-    "timetables.txt": {
-        "hash": "d5182fa62e3265d5698592f50b321051",
-        "last_modified": "2026-08-29T04:19:39+00:00",
-        "version_int": 44
-    },
-    "timetable_pages.txt": {
-        "hash": "e8dbeb29a644315a2a9fd67d9b6c3438",
-        "last_modified": "2026-08-29T04:19:39+00:00",
-        "version_int": 11
-    },
-    "timetable_stop_order.txt": {
-        "hash": "18b2adb0e0fb52d8d5f774ee6bbcfcac",
-        "last_modified": "2026-08-20T23:58:20+00:00",
-        "version_int": 5
-    },
-    "trips.txt": {
-        "hash": "6fc1aad76db7f7e295a1f846ab701658",
-        "last_modified": "2026-08-29T04:19:39+00:00",
-        "version_int": 43
-    },
-    "trips_booking.txt": {
-        "hash": "ae84f0680d75f61200e9066cd2758fb9",
-        "last_modified": "2026-05-25T13:14:44+00:00",
-        "version_int": 0
-    },
-    "vehicles.txt": {
-        "hash": "aec9f9aa6d66908aa438e7d36a17d98b",
-        "last_modified": "2026-08-29T04:19:39+00:00",
-        "version_int": 21
-    },
-    "vehicle_categories.txt": {
-        "hash": "d90ab450e388cf22ca40a8ed450909d5",
-        "last_modified": "2026-07-05T01:23:37+00:00",
-        "version_int": 2
-    }
-}
\ No newline at end of file