Resolves network issue with non-unique service names not playing well with the external letsencrypt network.

.gitignore

@@ -1 +1,3 @@
-.env
+.env
+docker-compose.yml
+default.conf

README.md

@@ -56,15 +56,19 @@ HTML_VOLUME=test_html_staging
 
 ## Usage
 
+### Initialize project with unique COMPOSE_PROJECT_NAME
+
+[./generate-compose-nginx.sh](generate-compose-nginx.sh)
+
 ### Upgrade Process
 
 1. Stop the current containers and remove volumes:
 ```bash
 docker compose down -v
 
-# Optional Steps
+# Optional Steps for testing and development
 
-# Clean volumes
+# Remove external database and content volume (DANGER: only do this if you have backed up these two volumes)
 grep -E 'DB_VOLUME|CONTENT_VOLUME' .env | cut -d '=' -f2 | xargs -I {} sh -c 'docker volume rm {} 2>/dev/null; docker volume create {}'
 
 # Remove Wordpress Image
@@ -76,22 +80,22 @@ docker rmi $(grep IMAGE_WEB .env | cut -d '=' -f2)
    - Modify version in `Dockerfile.wordpress_fpm`
    - Update `IMAGE_WEB` in `.env` file
 
-3. Build and test the new environment:
+3. Build and reinstall the new environment:
 ```bash
-# Build initial configuration
+# Build custom Wordpress image
 docker compose -f docker-compose.first.yml build 
 
-# Test the build
+# Install or Upgrade Wordpress /var/www/html volume (not external) from custom Wordpress image
 docker compose -f docker-compose.first.yml up -d
 
-# Stop test environment
+# Stop and remove Wordpress container, but keep html volume
 docker compose -f docker-compose.first.yml down
 
 # Start production environment
 docker compose up -d
 ```
 
-4. Migrate content:
+4. Migrate content (e.g., themes, plugins) after a new installation or upgrade:
 ```bash
 # In the wordpress service, copy new content to production
 cp -a wp-content-new/* wp-content/

default.template.conf

@@ -5,7 +5,7 @@ server {
 
     listen       80;
     listen  [::]:80;
-    server_name wordpress;
+    server_name wordpress_${COMPOSE_PROJECT_NAME};
     root /var/www/html;
     index index.php;
 
@@ -24,11 +24,11 @@ server {
     }
 
 
-    # pass the PHP scripts to FastCGI server listening on wordpress2:9000
+    # pass the PHP scripts to FastCGI server listening on wordpress:9000
     #
     location ~ \.php$ {
         #fastcgi_split_path_info ^(.+\.php)(/.+)$;
-        fastcgi_pass   wordpress:9000;
+        fastcgi_pass   wordpress_${COMPOSE_PROJECT_NAME}:9000;
         fastcgi_index  index.php;
         fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
         include        fastcgi_params;

docker-compose.first.yml

@@ -11,7 +11,7 @@ services:
         WORDPRESS_VERSION: ${WORDPRESS_VERSION}    
     image: ${IMAGE_WEB:-web}       
     volumes:
-      - html:/var/www/html           
+      - html:/var/www/html          
     environment:  
       - WORDPRESS_DB_HOST=${WORDPRESS_DB_HOST:-database:3306}      
       - WORDPRESS_DB_PASSWORD=${WORDPRESS_DB_PASSWORD:-fake}      
@@ -26,8 +26,9 @@ services:
         max-file: "3"
     restart: always
     networks:
+      - custom_network
       - letsencrypt
-      - default
+
 
 volumes:
   html:
@@ -35,4 +36,6 @@ volumes:
 
 networks:
   letsencrypt:
-    external: true
+    external: true
+  custom_network:
+    name: ${COMPOSE_PROJECT_NAME}_network  # Uses project-specific name     

docker-compose.template.yml

@@ -18,8 +18,9 @@
 
 services:
 
-  database:
+  database_${SERVICE_SUFFIX}:
     image: ${IMAGE_DATABASE:-database}
+    container_name: ${COMPOSE_PROJECT_NAME}_database
     volumes:
       - db:/var/lib/mysql
     environment:
@@ -34,13 +35,14 @@ services:
         max-file: "3"
     restart: always
     networks:
-      - letsencrypt
+      - custom_network
 
-  wordpress:
+  wordpress_${SERVICE_SUFFIX}:
     # build:
     #   context: .
     #   dockerfile: Dockerfile.wordpress_fpm
-    image: ${IMAGE_WEB:-wordpress}      
+    image: ${IMAGE_WEB:-wordpress}
+    container_name: ${COMPOSE_PROJECT_NAME}_wordpress      
     volumes:
       - html:/var/www/html
       - content:/var/www/html/wp-content
@@ -61,19 +63,21 @@ services:
     command: >
       bash -c "chown -R www-data:www-data /var/www/html/wp-content && php-fpm"   
     networks:
+      - custom_network
       - letsencrypt
-      - default
 
   # nginx:latest and/or can be customized      
-  web:
+  web_${SERVICE_SUFFIX}:
     # build:
     #   context: .
     #   dockerfile: Dockerfile.nginx
-    image: nginx:latest 
+    image: nginx:latest
+    container_name: ${COMPOSE_PROJECT_NAME}_web 
     restart: always
     volumes:
       - html:/var/www/html/
       - content:/var/www/html/wp-content
+      - ./wp-config.php:/var/www/html/wp-config.php
       - ./default.conf:/etc/nginx/conf.d/default.conf
       - ./nginx.conf:/etc/nginx/nginx.conf
     environment:
@@ -82,8 +86,8 @@ services:
       - LETSENCRYPT_EMAIL=${LETSENCRYPT_EMAIL:-me}
       - LETSENCRYPT_TEST=${LETSENCRYPT_TEST:-true} 
     networks:
-      - letsencrypt
+      - custom_network
-      - default   
+      - letsencrypt   
 
 # No variable substition for volumes in this version
 volumes:
@@ -99,5 +103,5 @@ volumes:
 networks:
   letsencrypt:
     external: true
-  # default:
+  custom_network:
-  #   name: ${COMPOSE_PROJECT_NAME}_default    
+    name: ${COMPOSE_PROJECT_NAME}_network  # Uses project-specific name      

generate-compose-nginx.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Docker service names are designed to be static, not dynamic, 
+# primarily due to the need for predictable and consistent communication 
+# between services within a Docker Compose environment.  However, since an
+# external letsencrypt network is utilized, conflicts occur if the service
+# name is not unique to the project.  This script resolves that issue by
+# generating a docker-compose.yml file with unique service names, which is
+# the COMPOSE_PROJECT_NAME
+
+# Load variables from .env file
+if [ -f .env ]; then
+    source .env
+fi
+
+export SERVICE_SUFFIX=${COMPOSE_PROJECT_NAME:-main}
+export COMPOSE_PROJECT_NAME
+envsubst < docker-compose.template.yml > docker-compose.yml
+envsubst '${COMPOSE_PROJECT_NAME}' < default.template.conf > default.conf