Require explicit VERSION in docker-compose files

README.md

@@ -6,7 +6,9 @@ Encrypt. While similar, the docker-compose files available here cater to
 different use cases for deploying Traefik.
 
 ## Add services to Traefik
+
 1. Define the external traefik network on the top-level networks key
+
 ```
 networks:
   traefik:
@@ -14,12 +16,14 @@ networks:
 ```
 
 2. Attach your web container to Traefik's network via the service-level `networks` key
+
 ```
     networks:
       - traefik
 ```
 
 3. Define routing for Traefik in labels, replacing "examplerouter" with something unique
+
 ```
     labels:
       traefik.http.routers.examplerouter.rule: Host(`www.example.org`)
@@ -30,30 +34,35 @@ networks:
 ```
 
 ## Variables
+
 Here's a brief explanation of the variables used in the docker-compose files:
 
 ### Docker Settings
+
 - `IMAGE`: The name of the Docker image (default: `traefik`).
-- `VERSION`: The tag of the Docker image (default: `latest`).
+- `VERSION`: The tag of the Docker image (required, no default).
 - `NAME`: The name assigned to the created container (default: `traefik`).
 
 ### Traefik Settings
+
 - `DASHBOARD`: Enable(=true) or disable(=false) the Traefik API dashboard (default: `false`).
 - `DOMAIN`: The domain name where Traefik's dashboard is accessible (default: `traefik.local.krislamo.org`).
 - `ENTRYPOINT`: The entry point for the dashboard (default: `local`).
 - `EXPOSED_BY_DEFAULT`: Expose Docker containers by default without needing specific labels (default: `false`).
 
 ### Network Settings
+
 - `NETWORK`: The Docker network to be used (default: `traefik`).
 - `WEB_PORT`: Binding for the regular HTTP traffic (defaults vary).
 - `WEBSECURE_PORT`: Binding for HTTPS traffic (default: `0.0.0.0:443:443`, only on HTTPS version).
 - `LOCAL_PORT`: Binding for local HTTPS traffic (default: `127.0.0.1:8443:8443`).
 
 ### Other Settings
+
 - `LOG_LEVEL`: Logging level (default: `ERROR`).
 - `DEBUG`: Enable(=true) or turn off(=false) API debugging (default: `false`).
 
-
 ## License
+
 This project is released under the 0BSD license, which allows for unrestricted
 use, modification, and distribution.

docker-compose.https.yml

@@ -7,7 +7,7 @@ networks:
 
 services:
   traefik:
-    image: "${IMAGE:-traefik}:${VERSION:-latest}"
+    image: "${IMAGE:-traefik}:${VERSION:?}"
     container_name: "${NAME:-traefik}"
     command:
       - --providers.docker=true

docker-compose.yml

@@ -7,7 +7,7 @@ networks:
 
 services:
   traefik:
-    image: "${IMAGE:-traefik}:${VERSION:-latest}"
+    image: "${IMAGE:-traefik}:${VERSION:?}"
     container_name: "${NAME:-traefik}"
     command:
       - --providers.docker=true