added additional config and docs

.github/docs/docker/README.md

@@ -0,0 +1,67 @@
+# Docker
+
+## Prerequisites
+
+You have created a `docker-compose.override.yml` file in the root directory of this repository.
+
+## Docker Network
+
+If you want to run the stack in a docker network, you need to change the `BACKEND_HOST` variable in the root `.env` file to `stockhome-backend`. To add a docker network, create a `docker-compose.override.yml` file in the root directory of this repository with the following content:
+
+```yaml
+services:
+  database:
+    networks:
+      - stockhome-network
+
+  backend:
+    networks:
+      - stockhome-network
+
+  frontend:
+    networks:
+      - stockhome-network
+
+networks:
+  stockhome-network:
+    driver: bridge
+```
+
+To start off I recommend to set the `BACKEND_HOST` variable to `localhost` and start the stack without a docker network. After you have started the stack and everything is working, you can add a docker network.
+
+## Ports
+
+### Change Exposed Ports
+
+If you want to change the exposed ports, you can do this in the `docker-compose.yml` file like so:
+
+```yaml
+services:
+  database:
+    ports:
+      - "3306:3306"
+
+  backend:
+    ports:
+      - "8004:8004"
+
+  frontend:
+    ports:
+      - "80:80"
+```
+
+### Remove Exposed Ports
+
+If you want to remove the exposed ports, you can do this in the `docker-compose.override.yml` file like so:
+
+```yaml
+services:
+  database:
+    ports: !override []
+
+  backend:
+    ports: !override []
+
+  frontend:
+    ports: !override []
+```