Database now with unique stac_id and stac_url is now in collection (#266)

* added `.env`

* added environment for docker-compose.yml
now every connection-details are inside an `.env`. There is an `example.env` for better understanding which need to be set as connection details

* added description of how to use the `.env` and `example.env` in the `README.md`

* changed a few things
e.g. DB_PORT --> ${DB_PORT}

* now, everthing should be done.

my god, help. sorry

* layout issues fixed

* Fixed Typo/incomplete Sentence in README.md

* added `stac_id` for collections

* all IDs are now written in the newer PostgrSQL standart:

```SQL
id SERIAL PRIMARY KEY,
```
changed to
```SQL
id INTEGER PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
```

* changed `extend` to `extent`.

* Changed language used in `./api/README.md` from german to english.

I wanted to thsi anyway at some point, but this is now more like a Test-commit to see if the CI/CD Pipeline triggers...

* added triggering function for an auto-update search_vector, both for collections and catalogs.
The search_vector includes  title, description and keywords

* changed the CI-Pipeline.
Now also Changes in the /db will be acceped by the Pipeline

* added different users for the api and crawler groups.

The api has read-only acces and the crawler user full acces to the database. The acces to the database is now possible by using the users `stac_api`or `stac_crawler`.
The admin user (`postgres_user`) is still available but shouldn't be used

* Refactor(database): SQL trigger definitions for catalog and collection keywords. Moved triggers to 06_triggers.sql for better organization, as they depend on the respective tables created in earlier scripts.

* added source_url for collections and catalogs. Now the full_json doesn`t has to be used for getting the url

* resolved a Problem I had with git by hand cause I didn't found the function

* to be stac conform the stac_id is not allowed to throw an error when asking for a string. So the stac_id in the database is saved as a TEXT and no longer as a INTEGER

* Database: Docker config for using the same network, STAC_ID now unique and stac_url is now in collections (#262)

* Add .gitignore for environment and dependencies; update docker-compose to include network configuration

* Update docker-compose.yml to rename network from 'stac_network' to 'stac-network' for consistency.

* db(change) source_url is now in collection and stac_id is now unique

---------

Co-authored-by: Sönke Hoffmann <shoffma5@uni.muenster.de>
Co-authored-by: SonkeHoffmann <hoffmann.sonke@gmx.de>
Co-authored-by: Robin Tammo Gummels <github@gummels.eu>

Author: 4 people

crawler/.gitignore

@@ -0,0 +1,3 @@
+.env
+node_modules
+storage

db/docker-compose.yml

@@ -22,5 +22,13 @@ services:
       - stac_data:/var/lib/postgresql/data
       - ./init:/docker-entrypoint-initdb.d
 
+    networks:
+      - stac-network
+
 volumes:
-  stac_data:
+  stac_data:
+
+networks:
+  stac-network:
+    name: stac-network
+    driver: bridge

db/init/03_tables_collections.sql

@@ -6,11 +6,12 @@
 CREATE TABLE collection (
     id INTEGER PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
     stac_version TEXT,
-    stac_id INTEGER,
+    stac_id TEXT UNIQUE,
     type TEXT,
     title TEXT,
     description TEXT,
     license TEXT,
+    source_url TEXT,
     created_at TIMESTAMP DEFAULT now(),
     updated_at TIMESTAMP DEFAULT now(),