Add readme how to build docker image and use it with docker-compose

15.0/.gitignore

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+odoo.deb

15.0/README.md

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+# Build Odoo docker image from Debian package
+
+The Dockerfile has been modified to use a local Odoo Debian package to install to the docker container.
+
+## Steps to build docker image
+
+1. Fetch the odoo debian package from https://odoo.com/download
+   * for the enterprise version, you need to login to your Odoo account!
+2. Rename the downloaded file to `odoo.deb` and place it in this directory.
+3. Create the docker image `my-odoo-15` with the following command:
+
+```
+docker build -t my-odoo-15 .
+```
+
+## Use the docker image
+
+The following docker-compose file will create three containers:
+* odoo15-web-live-1 --> the Odoo container itself
+* odoo15-db-live-1 --> the database (postgresql 13)
+* docker-odoo15-mailhog-1 --> mailhog instance
+* docker-odoo15-adminer-1 --> adminer instance
+
+```
+version: '3.1'
+services:
+  web:
+    container_name: odoo15-web-live-1
+    image: my-odoo-15:latest
+    depends_on:
+      - db
+    ports:
+      - 8269:8069
+    command: -- --dev=all
+    volumes:
+      - odoo15-data-live:/var/lib/odoo
+      - ./config:/etc/odoo
+      - ./addons:/mnt/extra-addons
+  db:
+    container_name: odoo15-db-live-1
+    image: postgres:13
+    environment:
+      - POSTGRES_DB=postgres
+      - POSTGRES_PASSWORD=odoo
+      - POSTGRES_USER=odoo
+    volumes:
+      - odoo15-db-data-live:/var/lib/postgresql/data
+  mailhog:
+    image: mailhog/mailhog
+    ports:
+       - 1225:1025 # smtp server
+       - 8227:8025 # web ui
+  adminer:
+    image: adminer
+      #restart: always
+    ports:
+      - 8282:8080
+volumes:
+  odoo15-db-data-live:
+  odoo15-data-live:
+```
+
+## Access the web interfaces
+
+Ports for the web access can be configured in the docker-compose file.
+
+### Odoo
+
+http://localhost:8269/
+
+### Adminer (Postgresql)
+
+http://localhost:8282/
+
+* select database system "PostgreSQL"
+* Server: db
+* Username: odoo
+* Password: odoo
+* Database: empty
+
+### Mailhog