application deployment using docker

Author: ajitmourya7

APPLICATION_DEPLOYMENT_USING_DOCKER.md

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+# Application Deployment Using Docker
+1. **Docker Command for Build,Save,Load image**
+2. **Create Docker Network**
+2. **Run Docker For Database**
+3. **Run Docker For Redis**
+4. **Run Docker For ML Model**
+5. **Run Docker For One-time Application Migration**
+6. **Run Docker For Application (Web & Worker)**
+7. **Run Docker For Nginx (If required)**
+
+**NOTE: If docker command raise issue then use sudo**
+
+### Docker Command for Build,Save,Load image
+```ssh
+docker build -t tage_name .
+docker save tage_name > tage_name.tar
+docker load --input tage_name.tar
+```
+
+### Create Docker Network
+```ssh
+docker network create application_network
+```
+
+### Run Docker For Database
+```ssh
+docker run -d --name postgres --network application_network -e POSTGRES_USER={{DB_USERNAME}} -e POSTGRES_PASSWORD={{DB_PASSWORD}} -e POSTGRES_DB={{DB_NAME}} -e PGDATA=/var/lib/postgresql/data/pgdata -v ./postgresql/data:/var/lib/postgresql/data/pgdata postgres:14
+```
+
+### Run Docker For Redis
+```ssh
+docker run -d --name redis --network application_network redis:7
+```
+
+### Run Docker For ML Model
+```ssh
+docker run -d --name layoutlmv2 --network application_network --env-file ./.env -v ./layoutlmv2/model:/opt/ml/model entities:latest
+docker run -d --name detr --network application_network --env-file ./.env -v ./detr/model:/opt/ml/model table:latest
+```
+
+### Run Docker For One-time Application Migration
+```ssh
+docker run --rm --name application_migrate --network application_network --link postgres --link redis --env-file ./.env application:latest python manage.py migrate_schemas
+docker run --rm --name application_public --network application_network --link postgres --link redis --env-file ./.env application:latest python manage.py make_public_tenant
+```
+
+### Run Docker For Application (Web & Worker)
+```ssh
+docker run -d --name application_webserver --network application_network --link postgres --link redis --env-file ./.env --entrypoint ./custom_entrypoint.sh -v ./custom_entrypoint.sh:/home/application/custom_entrypoint.sh -v ./media:/home/application/media -v ./static:/home/application/static -p 8000:8000 application:latest
+```
+
+#### Custom Entrypoint (name: custom_entrypoint.sh)
+```ssh
+#!/bin/bash
+python manage.py runserver 0.0.0.0:8000 & celery -A application_project worker -l INFO -c 2
+```
+
+### Run Docker For Nginx (If required)
+```ssh
+docker run -d --name nginx_server --network application_network -v ./nginx.conf:/etc/nginx/nginx.conf -v ./certs:/etc/nginx/certs/ -v ./static:/etc/nginx/static/ -p 443:443 nginx:latest
+```
+
+#### Nginx Conf (name: nginx.conf)
+```ssh
+events {
+    worker_connections 1024;
+}
+
+http {
+    upstream django {
+        server application_webserver:8000;
+    }
+ 
+    server {
+        listen 443 ssl;
+        server_name {{tenant_domain}};
+
+        ssl_certificate /etc/nginx/certs/glib/certificate.crt;
+        ssl_certificate_key /etc/nginx/certs/glib/private.key;
+        
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_prefer_server_ciphers on;
+        ssl_ciphers HIGH:!aNULL:!MD5;
+        
+        #location /static/ {
+        #    alias /etc/nginx/static/;
+        #}
+
+        location / {
+            proxy_pass http://application_webserver:8000;
+            # proxy_set_header Host {{tenant_domain}}; (if required)
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+        client_max_body_size 250M;
+    }
+ 
+    
+    server {
+        listen 443 ssl;
+        server_name {{admin_domain}};
+
+        ssl_certificate /etc/nginx/certs/admin/certificate.crt;
+        ssl_certificate_key /etc/nginx/certs/admin/private.key;
+        
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_prefer_server_ciphers on;
+        ssl_ciphers HIGH:!aNULL:!MD5;
+        
+        #location /static/ {
+        #    alias /etc/nginx/static/;
+        #}
+
+        location / {
+            proxy_pass http://application_webserver:8000;
+            # proxy_set_header Host {{admin_domain}}; (if required)
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+        client_max_body_size 250M;
+    }
+}
+```