Containerize app, upgrade Rails to 8.1.3, and overhaul CI#76
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Containerize app, upgrade Rails to 8.1.3, and overhaul CI#76
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## What changed ### Rails upgrade - Bump `rails` from 8.0.3 → 8.1.3 (latest stable) and regenerate Gemfile.lock ### Docker / containerization - Rewrite `Dockerfile` with three named targets: - `development` – all gems installed to system path for live-reload with volume mounts - `builder` – production gems + bootsnap precompile (intermediate) - `production` – lean Alpine runtime, no build tooling; ships to Fly.io / GHCR - Add `docker-compose.yml` for one-command local dev (`docker compose up`) - `web` service with source-code volume mount and persistent SQLite volume - `css` service runs `tailwindcss:watch` alongside the web server - Add `bin/docker-entrypoint` that runs `db:prepare` before the server starts - Expand `.dockerignore` (exclude SQLite files, coverage, editors, etc.) - Add `.env.example` documenting all required/optional environment variables ### GitHub Actions - Update `ruby-ci.yml`: - Upgrade `actions/checkout` v2 → v4 - Enable `bundler-cache: true` on `ruby/setup-ruby` for faster CI - Split into two parallel jobs: `lint` (RuboCop) and `test` (RSpec) - Add `docker.yml` workflow: - Builds the `production` target on every PR/push (validates the image) - Pushes to `ghcr.io/vidhiya-saagar/spg2` on merges to `main` and version tags - Uses GitHub Actions layer cache (`type=gha`) to speed up builds ### README - Add Docker quick-start section (Option A) alongside the existing local setup - Document the three Dockerfile targets and compose commands - Add CI/CD workflow summary table Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
bin/rails, bin/rake, and bin/setup had shebangs pointing to a specific developer's local RVM path (/Users/dilraj/.rvm/...) which doesn't exist in Docker containers (or anyone else's machine). Replace with the portable #!/usr/bin/env ruby form. This fixes the "exec bin/rails: no such file or directory" error when running `docker compose up`. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Two issues prevented `docker compose up` from working cleanly: 1. **CSS service crash** – tailwindcss-ruby couldn't find its aarch64 binary because the dev stage used Alpine (musl libc) but platform gems are distributed as gnu binaries. Fix: use ruby:3.4.5-slim (Debian/glibc) for the development target so platform-specific gems work. Production target stays on Alpine for a lean image. 2. **Tailwind platform not in lockfile** – Added aarch64-linux, aarch64-linux-gnu, x86_64-linux-gnu to Gemfile.lock PLATFORMS so bundler selects the correct pre-compiled tailwindcss binary. The stack now boots fully: web server on :1843, Tailwind watcher running, /books and /books/1.json return JSON correctly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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What changed
Rails upgrade
railsfrom 8.0.3 → 8.1.3 (latest stable) and regenerate Gemfile.lockDocker / containerization
Dockerfilewith three named targets:development– all gems installed to system path for live-reload with volume mountsbuilder– production gems + bootsnap precompile (intermediate)production– lean Alpine runtime, no build tooling; ships to Fly.io / GHCRdocker-compose.ymlfor one-command local dev (docker compose up)webservice with source-code volume mount and persistent SQLite volumecssservice runstailwindcss:watchalongside the web serverbin/docker-entrypointthat runsdb:preparebefore the server starts.dockerignore(exclude SQLite files, coverage, editors, etc.).env.exampledocumenting all required/optional environment variablesGitHub Actions
ruby-ci.yml:actions/checkoutv2 → v4bundler-cache: trueonruby/setup-rubyfor faster CIlint(RuboCop) andtest(RSpec)docker.ymlworkflow:productiontarget on every PR/push (validates the image)ghcr.io/vidhiya-saagar/spg2on merges tomainand version tagstype=gha) to speed up buildsREADME
Description
New Changes
Closes # (issue)
How Has This Been Tested?