diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..0d05604
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,6 @@
+.git
+jobs/
+www/
+*.img
+*.osm
+__pycache__/
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..bd2c394
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,46 @@
+FROM php:8.4-cli-alpine
+
+ARG MKGMAP_VERSION=r4924
+
+# System dependencies (Alpine)
+RUN apk add --no-cache \
+    openjdk21-jre-headless \
+    py3-shapely \
+    python3 \
+    unzip \
+    wget
+
+# Directory structure that matches the relative paths in the Python scripts:
+#   script_dir = /srv/src/missing_squadrats/
+#   script_dir + ../../jobs/... = /srv/jobs/missing_squadrats/
+#   script_dir + ../../www/...  = /srv/www/missing_squadrats/
+#   Path(__file__).parent^3 / YYYYMMDD = /srv/YYYYMMDD/  (temp build dir)
+#   logFilePath = /home/users/oranta/  (hardcoded)
+RUN mkdir -p \
+    /srv/src/ext \
+    /srv/src/missing_squadrats \
+    /srv/jobs/missing_squadrats \
+    /srv/www/missing_squadrats/img \
+    /home/users/oranta/python3/venv/bin \
+    /var/www/10/oranta/sites/oranta.kapsi.fi
+
+# Download mkgmap and symlink to the version hardcoded in missing_squadrats.py
+RUN wget -q "https://www.mkgmap.org.uk/download/mkgmap-${MKGMAP_VERSION}.zip" \
+    && unzip -q "mkgmap-${MKGMAP_VERSION}.zip" -d /srv/src/ext/ \
+    && rm "mkgmap-${MKGMAP_VERSION}.zip" \
+    && ln -s "/srv/src/ext/mkgmap-${MKGMAP_VERSION}" /srv/src/ext/mkgmap-r4916
+
+# Symlinks for the two hardcoded absolute paths in the Python scripts
+RUN ln -s /srv/jobs /var/www/10/oranta/sites/oranta.kapsi.fi/jobs \
+    && ln -s /usr/bin/python3 /home/users/oranta/python3/venv/bin/python3
+
+# Seed mapName.txt so the script has a valid starting map number
+RUN echo "2026-01-01 00:00:00,17,0,63040001" > /home/users/oranta/mapName.txt \
+    && touch /home/users/oranta/missingSquadrats.log
+
+EXPOSE 8000
+
+COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+ENTRYPOINT ["docker-entrypoint.sh"]
diff --git a/README.md b/README.md
index abad842..bd5cc9c 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,50 @@
 Create a Garmin compatible map image from the [Squadrats.com](http://www.squadrats.com/) kml file.
 
 # Getting Started
-## Prerequisites
-You need a working python installation to run the script.
 
-## Installation
+## Docker
+
+The easiest way to run the project is with Docker.
+
+### Prerequisites
+- [Docker](https://docs.docker.com/get-docker/) with the Compose plugin
+
+### Run
+```
+git clone https://github.com/rankka74/Missing_squadrats.git
+cd Missing_squadrats
+docker compose up --build
+```
+
+Open http://localhost:8000 in your browser.
+
+### How it works inside Docker
+- **Web GUI** is served by the PHP built-in server on port 8000.
+- Submitting the form uploads the KML file and runs `missing_squadrats.py` synchronously — the page shows "Done!" when the `.img` file is ready.
+- Generated `.img` files, the job queue, and the log are stored in named Docker volumes so they survive container restarts.
+
+### Volumes
+| Volume | Contents |
+|---|---|
+| `img-files` | Generated Garmin `.img` files |
+| `job-queue` | Pending and in-progress jobs |
+| `oranta-data` | Log file and map-number counter |
+
+To reset everything: `docker compose down -v`
+
+---
+
+## Manual installation
+
+### Prerequisites
+You need a working Python installation to run the script.
+
+### Installation
 1. Clone the repo
 ```
 git clone https://github.com/rankka74/Missing_squadrats.git
 ```
-2. Install necessary python libraries eiter system wise or as a virtual environment
+2. Install necessary python libraries either system wide or as a virtual environment
 ```
 sys
 os
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..ddd3c13
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,20 @@
+services:
+  web:
+    build: .
+    ports:
+      - "8000:8000"
+    volumes:
+      # Bind-mount source files so changes are live without rebuilding
+      - ./web-gui:/srv/www/missing_squadrats
+      - ./missing_squadrats.py:/srv/src/missing_squadrats/missing_squadrats.py
+      - ./testMissingSquadrats.py:/srv/src/missing_squadrats/testMissingSquadrats.py
+      - ./mkgmap-config/config.txt:/srv/src/missing_squadrats/config.txt
+      # Named volumes for generated output and state (persist across restarts)
+      - img-files:/srv/www/missing_squadrats/img
+      - job-queue:/srv/jobs/missing_squadrats
+      - oranta-data:/home/users/oranta
+
+volumes:
+  img-files:
+  job-queue:
+  oranta-data:
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
new file mode 100644
index 0000000..10c72f7
--- /dev/null
+++ b/docker-entrypoint.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+# Start PHP built-in server as the web frontend
+exec php -S 0.0.0.0:8000 -t /srv/www/missing_squadrats \
+    -d upload_max_filesize=64M \
+    -d post_max_size=64M
diff --git a/web-gui/index.php b/web-gui/index.php
index df1b8c3..c9c2960 100644
--- a/web-gui/index.php
+++ b/web-gui/index.php
@@ -60,7 +60,8 @@
 foreach ($imgFiles as $file) {
     if (is_file($file)) {
         if ($threshold < filemtime($file)) {
-			echo "<LI><A href=\"https://oranta.kapsi.fi/missing_squadrats/" . $file . "\">" . str_replace("img/","",$file) . "</A><BR>\r\n";
+			$href = file_exists('/.dockerenv') ? $file : "https://oranta.kapsi.fi/missing_squadrats/" . $file;
+			echo "<LI><A href=\"" . $href . "\">" . str_replace("img/","",$file) . "</A><BR>\r\n";
         }
     }
 }
diff --git a/web-gui/upload.php b/web-gui/upload.php
index 977302a..4b1849e 100644
--- a/web-gui/upload.php
+++ b/web-gui/upload.php
@@ -81,6 +81,44 @@ function clean($string) {
   'squadratinhosColor' => $squadratinhosColor,
 ]);
 file_put_contents($target_dir . $fileName . '.csv', $job);
+
+// In Docker: spawn Python directly so cron is not needed for local development.
+if (file_exists('/.dockerenv')) {
+  echo "Processing map, please wait...<BR>\r\n";
+  flush();
+
+  set_time_limit(0);
+
+  $args = [
+    '/usr/bin/python3',
+    '/srv/src/missing_squadrats/missing_squadrats.py',
+    $fileName . '.kml',
+    $userName,
+    (string) $NWlon,
+    (string) $NWlat,
+    (string) $SElon,
+    (string) $SElat,
+    (string) $squadratinhosLineWeight,
+    $squadratinhosColor,
+  ];
+  $descriptors = [
+    0 => ['pipe', 'r'],
+    1 => ['file', '/home/users/oranta/missingSquadrats.log', 'a'],
+    2 => ['file', '/home/users/oranta/missingSquadrats.log', 'a'],
+  ];
+  $proc = proc_open($args, $descriptors, $pipes, '/srv/src/missing_squadrats');
+  if (is_resource($proc)) {
+    fclose($pipes[0]);
+    $exitCode = proc_close($proc);
+    if ($exitCode === 0) {
+      echo "Done! <a href=\"index.php\">Go back</a> to download your map.<br>\r\n";
+    } else {
+      echo "Processing failed (exit code $exitCode). Check the log for details.<br>\r\n";
+    }
+  } else {
+    echo "Failed to start processing.<br>\r\n";
+  }
+}
 ?>
 
 </body>