Test postgres db connection before first init.

mikroman/Dockerfile

@@ -31,6 +31,8 @@ COPY server-conf.json /conf/
 ARG AM_I_IN_A_DOCKER_CONTAINER=Yes
 COPY init.sh /app/ 
 COPY initpy.py /app/ 
+COPY testdb.py /app/ 
+
 RUN chmod +x /app/init.sh 
 
 # background spooler dir

mikroman/init.sh

@@ -8,9 +8,22 @@ else
 fi
 
 
+# First Check if db is ready and accepting connections
+
+python3 /app/testdb.py
+
+# Check if the Python script ran successfully
+if [ $? -ne 0 ]; then
+    echo "An error occurred while executing the SQL commands."
+    exit 1
+else
+    echo "Good News! Database is Running. :)"
+fi
+
 CONTAINER_ALREADY_STARTED="CONTAINER_ALREADY_STARTED_PLACEHOLDER"
 if [ ! -e $CONTAINER_ALREADY_STARTED ]; then
     echo "-- Initializing the mikroman for first run  --"
+
     # YOUR_JUST_ONCE_LOGIC_HERE
     cd /app && export PYTHONPATH=/app/py && export PYSRV_CONFIG_PATH=/conf/server-conf.json && python3 scripts/dbmigrate.py
 

mikroman/testdb.py

@@ -0,0 +1,38 @@
+import psycopg2
+import time
+import os
+import json
+
+# Step 1: Read connection details from server.json
+
+def wait_for_postgres():
+    try:
+        with open('/conf/server-conf.json') as f:
+            config = json.load(f)
+            db_name = config['PYSRV_DATABASE_NAME']
+            db_user = config['PYSRV_DATABASE_USER']
+            db_password = config['PYSRV_DATABASE_PASSWORD']
+            db_host = config['PYSRV_DATABASE_HOST_POSTGRESQL']
+            db_port = config['PYSRV_DATABASE_PORT']
+
+    except Exception as e:
+        print(f"An error occurred: {e}")
+        exit(1)
+    print(f"Waiting for PostgreSQL database {db_name} to become available...")
+    while True:
+        try:
+            conn = psycopg2.connect(
+                dbname=db_name,
+                user=db_user,
+                password=db_password,
+                host=db_host,
+                port=db_port
+            )
+            conn.close()
+            print("PostgreSQL is ready!")
+            break
+        except psycopg2.OperationalError as e:
+            print(f"Database not ready yet. Retrying in 5 seconds...\nError: {e}")
+            time.sleep(5)
+
+wait_for_postgres()