Refactor Dockerfile some more

.dockerignore

@@ -1,4 +1,3 @@
-# .dockerignore
 .github/
 .idea/
 examples/
@@ -7,4 +6,4 @@ LICENSE
 .git/
 *.md
 *.yml
-Dockerfile
+Dockerfile

CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [2.0.0] - 2024-11-16
+### Changed
+- Refactored Docker image size to be smaller

Dockerfile

@@ -1,5 +1,5 @@
 # The first stage is dedicated to building the application
-FROM ruby:3.2.2-alpine as BUILD
+FROM ruby:3.2.2-alpine AS build
 
 ENV PORT=9594 \
     USER=app \
@@ -8,7 +8,7 @@ ENV PORT=9594 \
 
 WORKDIR $ROOT
 
-# Updating system packages and installing dependencies
+# Update system packages and installing dependencies
 RUN apk update && apk upgrade && \
     apk add --update --no-cache --virtual .build-deps \
     build-base \
@@ -29,10 +29,10 @@ RUN gem install bundler && \
 COPY . $ROOT/
 
 # The second stage is responsible for preparing the runtime
-FROM ruby:3.2.2-alpine as RUNTIME
+FROM ruby:3.2.2-alpine AS runtime
 
-# Copy over files from the BUILD step
-COPY --from=BUILD $ROOT $ROOT
+# Copy over files from the build step
+COPY --from=build $ROOT $ROOT
 
 # Set environmental variables
 ENV PORT=9594 \
@@ -49,4 +49,4 @@ RUN addgroup -S $GROUP && \
 
 USER $USER:$GROUP
 
-CMD bundle exec puma -b tcp://0.0.0.0:$PORT
+CMD bundle exec puma -b tcp://0.0.0.0:$PORT

Gemfile.lock

@@ -34,10 +34,10 @@ PLATFORMS
   x64-mingw-ucrt
 
 DEPENDENCIES
-  http
-  prometheus-client
-  puma
-  rack
+  http (~> 5.1.1)
+  prometheus-client (~> 4.2.2)
+  puma (~> 6.4.0)
+  rack (~> 3.0.8)
 
 RUBY VERSION
    ruby 3.2.2p53

docker-compose.yml

@@ -1,8 +1,6 @@
-version: '3.4'
-
 services:
   app:
-    image: axsuul/plex-media-server-exporter:2022-11-26
+    image: axsuul/plex-media-server-exporter
     build: .
     environment:
       # Can be set in .env