Update image in README and rearrange Dockerfile

Updated the image tag in the README file to use the development version from the ghcr.io repository. Also, rearranged Dockerfile by moving the environment variable declarations and adding new labels. The changes aim to enhance readability and maintainability of the Dockerfile.

Dockerfile

@@ -1,17 +1,19 @@
 FROM node:21-alpine
 LABEL authors="Akama Aka"
+LABEL org.opencontainers.image.license="CC-BY-NC-ND 4.0"
+ENV VERSION=1.0.0.2 \
+    SERVER_PORT=8080 \
+    SERVER_HOSTNAME=127.0.0.1 \
+    SERVER_LOG_LEVEL=info \
+    PATH_IDENTIFIER=akami-cgi
+LABEL org.opencontainers.image.version=$VERSION
+LABEL org.opencontainers.image.description="An custom CDN-CGI Server for 4xx,5xx Status Response Sites."
 RUN npm i -g fastify-cli
 RUN mkdir /opt/server
 RUN chown node:node /opt/server
 USER node
 WORKDIR /opt/server
 COPY --chown=node:node ./ /opt/server
-ENV VERSION=1.0.0.2 \
-    SERVER_PORT=8080 \
-    SERVER_HOSTNAME=127.0.0.1 \
-    SERVER_LOG_LEVEL=info \
-    PATH_IDENTIFIER=akami-cgi
-
 RUN npm i
 EXPOSE $SERVER_PORT
-CMD [ "npm", "run"]
+CMD [ "npm", "run"]

README.md

@@ -62,7 +62,7 @@ Below is a sample docker-compose.yml that gives an example of how Docker Compose
 version: "3.8"
 services:
   cdn-cgi-server:
-    image: akami-cdn-cgi-server:1.0.0.2
+    image: ghcr.io/akama-aka/akami-statuspage:development
     environment:
       - VERSION=1.0.0.2
       - SERVER_PORT=8080