Add database connection handling with dummy usage

database/Dockerfile

@@ -1,7 +1,7 @@
 FROM postgres:11
-ENV POSTGRES_USER flittr
-ENV POSTGRES_PASSWORD flittr
-ENV POSTGRES_DB flittr
+ENV POSTGRES_USER codepage
+ENV POSTGRES_PASSWORD codepage
+ENV POSTGRES_DB codepage
 ENV PGDATA /var/lib/postgresql/data/pgdata
 VOLUME /var/lib/postgresql/data/pgdata
 

webserver/Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3
 RUN pip install -U Flask
+RUN pip install psycopg2
 WORKDIR /
 ADD ./src/ /src/
 CMD ["python", "/src/webserver.py"]

webserver/src/config.py

@@ -0,0 +1,5 @@
+DB_NAME = "codepage"
+DB_USER = "codepage"
+DB_PASS = "codepage"
+DB_HOST = "database"
+DB_PORT = 5432

webserver/src/database.py

@@ -0,0 +1,15 @@
+"""
+Database handling code for the CodePage
+"""
+import psycopg2
+import config
+
+def getdb():
+    return psycopg2.connect(
+            dbname=config.DB_NAME,
+            user=config.DB_USER,
+            password=config.DB_PASS,
+            host=config.DB_HOST,
+            port=config.DB_PORT
+            )
+

webserver/src/webserver.py

@@ -1,10 +1,12 @@
 from flask import Flask
+from database import getdb
 
 app = Flask(__name__)
 
 @app.route("/")
 def hello():
-    return "Hello, world"
+    with getdb() as db:
+        return "Hello, world"
 
 if __name__ == '__main__':
     app.run(debug=True, host='0.0.0.0')