added healthcheck to database connection

.env.example

@@ -6,5 +6,4 @@ UID=1000
 GID=1000
 
 DATABASE_ENGINE= postgresql_psycopg2
-DATABASE_HOST=db
 DATABASE_PORT=5432

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   db:
     image: postgres:17
+    container_name: djangodocker-db
     environment:
       POSTGRES_DB: ${DATABASE_NAME}
       POSTGRES_USER: ${DATABASE_USERNAME}
@@ -11,6 +12,12 @@ services:
       - "5432:5432"
     volumes:
       - djangodocker_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready", "-d", "$DATABASE_NAME"]
+      interval: 30s
+      timeout: 60s
+      retries: 5
+      start_period: 80s
 
   api:
     build: .
@@ -19,7 +26,8 @@ services:
     ports:
       - "8000:8000"
     depends_on:
-      - db
+      db:
+        condition: service_healthy
     environment:
       DJANGO_SECRET_KEY: ${DJANGO_SECRET_KEY}
       DEBUG: ${DEBUG}

firstRun.sh

@@ -30,8 +30,13 @@ then
   DATABASE_PASSWORD=$(tr -dc 'A-Za-z0-9' < /dev/urandom | head -c 15)
 fi
 
+echo "user is $DATABASE_USERNAME"
+echo "pass is $DATABASE_PASSWORD"
+echo "DATABASE_NAME is ${PROJECT_NAME}"
+
 SECRET_KEY=$(tr -dc 'A-Za-z0-9' < /dev/urandom | head -c 50)
 {
+  echo "DATABASE_HOST=${PROJECT_NAME}-db"
   echo "DATABASE_NAME=${PROJECT_NAME}"
   echo "DATABASE_USERNAME=${DATABASE_USERNAME}"
   echo "DATABASE_PASSWORD=${DATABASE_PASSWORD}"
@@ -47,6 +52,7 @@ echo "===== STARTING DOCKER ====="
 docker compose up -d --build
 
 echo "===== MIGRATING DATABASE ====="
+echo "Running: docker exec -ti ${PROJECT_NAME}-api ./manage.py migrate"
 docker exec -ti "${PROJECT_NAME}-api" ./manage.py migrate
 
 echo "===== CREATE SUPERUSER ====="