Newer method

.solargraph.yml

@@ -0,0 +1,14 @@
+---
+include:
+- "**/*.rb"
+exclude:
+- spec/**/*
+- vendor/**/*
+- ".bundle/**/*"
+require: []
+domains: []
+reporters: []
+formatter:
+require_paths: []
+plugins: []
+max_files: 5000

Dockerfile

@@ -1,6 +1,7 @@
-FROM ruby:3.2 AS development
+FROM ruby:3.2 AS base
 
-ARG UNAME=app
+# These build args are in your `.env` file, and they exist so that for
+# development the user in the container has the same UID and GID as you. 
 ARG UID=1000
 ARG GID=1000
 
@@ -10,20 +11,36 @@ ARG GID=1000
 
 RUN gem install bundler
 
-RUN groupadd -g ${GID} -o ${UNAME}
-RUN useradd -m -d /app -u ${UID} -g ${GID} -o -s /bin/bash ${UNAME}
+# Add the app group. Map it's GID to the build arg. -o means it's ok if it's a non-unique GID.
+RUN groupadd -g ${GID} -o app
+
+# Add the app user. Map its UID and GID to the build args. Create a /app home
+# directory for it. -o means it's ok if it's a non-unique GID. Set the shell to
+# bash. 
+RUN useradd -m -d /app -u ${UID} -g ${GID} -o -s /bin/bash app
+
+#Make a gems directory and have it owned by the app user and group
 RUN mkdir -p /gems && chown ${UID}:${GID} /gems
 
-USER $UNAME
+USER app
 
 ENV BUNDLE_PATH /gems
 
 WORKDIR /app
 
 CMD ["tail", "-f", "/dev/null"]
 
-FROM development AS production
+FROM base AS development
+
+COPY --chown=${UID}:${GID} Gemfile /app/
+
+# cache mount for bundle install so running bundle install won't reinstall
+# everything
+RUN --mount=type=cache,target=/gems/bundle,uid=${UID},gid=${GID} \
+  bundle install
+
+FROM base AS production
 
 COPY --chown=${UID}:${GID} . /app
-RUN bundle  install
 
+RUN bundle install

Gemfile

@@ -1,16 +1,13 @@
 source "https://rubygems.org"
 
-group :development, :test do
+gem "marc"
+gem "rails"
+
+group :development do
   gem "pry"
   gem "pry-byebug"
-end
-
-group :test do
+  gem "standard"
   gem "rspec"
   gem "simplecov"
   gem "simplecov-lcov"
 end
-
-group :development do
-  gem "standard"
-end

README.md

@@ -11,11 +11,10 @@ Run the setup script
 
 This will:
 
-* copy `env.example` to `.env` 
+* copy `env.example` to `.env` and in the env file sets the UID and GID to your values.
 * enable the precommit hook which wil lint the code before committing.  Uncomment
   those lines in `.git/hooks/precommit` to enable running tests.
 * build the docker image
-* install the gems
 
 The script does not overwrite `.env` or `/git/hooks/precommit`.
 

bundle_install.sh

@@ -0,0 +1,2 @@
+#This builds the gems and updates Gemfile.lock
+docker compose build && docker compose run --rm app bundle install

compose.yml

@@ -3,11 +3,10 @@ services:
     build: 
       context: .
       target: development
+      args:
+        - UID=${UID}
+        - GID=${UID}
     volumes:
       - .:/app
-      - gem_cache:/gems
     env_file:
       - .env
-
-volumes:
-  gem_cache:

env.example

@@ -1 +1,5 @@
+#Set these to your actual UID and GID
+UID=YOUR_UID
+GID=YOUR_GID
+
 SEKRET="aweflweif;wltgi5t13o5i"

init.sh

@@ -3,6 +3,11 @@ if [ -f ".env" ]; then
 else
   echo "🌎 .env does not exist. Copying .env-example to .env"
   cp env.example .env
+  YOUR_UID=`id -u`
+  YOUR_GID=`id -g`
+  echo "🙂 Setting your UID ($YOUR_UID) and GID ($YOUR_UID) in .env"
+  sed -i s/YOUR_UID/$YOUR_UID/ .env
+  sed -i s/YOUR_GID/$YOUR_GID/ .env
 fi
 
 if [ -f ".git/hooks/pre-commit" ]; then
@@ -14,6 +19,3 @@ fi
 
 echo "🚢 Build docker images"
 docker compose build
-
-echo "📦 Installing Gems"
-docker compose run --rm app bundle