add instructions to use local Docker container for Postgres

README.md

@@ -25,6 +25,63 @@ After a collegue has made changes, then locally
   * pip install -r requirements\dev.txt
   * python manage.py migrate --settings=ldvspec.settings.dev  
   
+  
+## Local Development Environment
+
+### Postgres Database in Docker
+
+Run `docker-compose up -d` with the following compose file to spin up a new Postgres container.
+See the `docker-compose-postgres-dev.yml` file in the `docker` directory.
+(not that port 5433 is used. You can change that at will, but then also change it in `dev.py`)
+```yaml
+
+version: "3.7"
+services:
+      
+  ldv-spec-db:
+    image: postgres:14
+    container_name: ldv-spec-postgres
+    expose:
+      - 5433
+    ports:
+      - 5433:5432
+    environment:
+      POSTGRES_PASSWORD: "secret"
+      POSTGRES_USER: "postgres"
+      POSTGRES_DB: "ldv-spec-db"      
+    volumes:
+      - ldv-spec-db:/var/lib/postgresql/data
+    restart: always
+    
+volumes:
+  ldv-spec-db:
+```
+
+### Django Application
+  * clone the repo
+  * open the project in Pycharm
+  * create a venv (File -> Settings -> Project -> Project Interpreter -> (click cog) -> add)
+  * pip install -r requirements\dev.txt
+  
+  * check and/or change the database connection in settings/dev/py. In this example it connects to a database server on 'raspiastro', 
+  you have to change that to the server where you run your Postgres Docker container (localhost?) 
+  
+```python
+DATABASES = {
+    'default': {
+         'ENGINE': 'django.db.backends.postgresql_psycopg2',
+         'USER': 'postgres',
+         'PASSWORD': 'secret',
+         'NAME': 'ldv-spec-db',
+         'HOST': 'raspiastro',
+         'PORT': '5433',
+    },
+}
+```
+
+   * python manage.py migrate --settings=ldvspec.settings.dev
+   * python manage.py runserver --settings=ldvspec.settings.dev
+   
 ## Test Environment
   * https://sdc-dev.astron.nl/ldvspec/
 

ldvspec/docker/docker-compose-postgres-dev.yml

+version: "3.7"
+services:
+
+  ldv-spec-db:
+    image: postgres:14
+    container_name: ldv-spec-postgres
+    expose:
+      - 5433
+    ports:
+      - 5433:5432
+    env_file:
+      - $HOME/shared/ldvspec.env
+    environment:
+      POSTGRES_PASSWORD: "secret"
+      POSTGRES_USER: "postgres"
+      POSTGRES_DB: "ldv-spec-db"
+    volumes:
+      - ldv-spec-db:/var/lib/postgresql/data
+    restart: always
+
+volumes:
+  ldv-spec-db:
\ No newline at end of file

ldvspec/lofardata/templates/lofardata/index.html

@@ -16,7 +16,7 @@
         </tbody>
 
     </table>
-    <p class="footer"> Version 1.0.0 (25 jul 2022 - 8:00)
+    <p class="footer"> Version 1.0.0 (26 jul 2022 - 13:00)
 
 </div>