Dockerise and Kamal 2

.dockerignore

@@ -0,0 +1,20 @@
+# See https://docs.docker.com/engine/reference/builder/#dockerignore-file for more about ignoring files.
+
+# Ignore git directory.
+/.git/
+/.gitignore
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore all environment files (except templates).
+/.env*
+!/.env*.erb
+
+# Ignore all logfiles and tempfiles.
+tmp/*
+!tmp/.keep
+public/*
+!public/.keep
+.sass-cache/
+!.sass-cache/.keep

.gitignore

@@ -12,10 +12,13 @@
 
 # Ignore all logfiles and tempfiles.
 /log/*.log
-/tmp
-/public
+tmp/*
+!tmp/.keep
+public/*
+!public/.keep
 /*.swp
 *.DS_Store
 /nbproject/*
 /*.swo
 .sass-cache/
+!.sass-cache/.keep

.kamal/hooks/docker-setup.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Docker set up on $KAMAL_HOSTS..."

.kamal/hooks/post-app-boot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Booted app version $KAMAL_VERSION on $KAMAL_HOSTS..."

.kamal/hooks/post-deploy.sample

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# A sample post-deploy hook
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLES (if set)
+# KAMAL_DESTINATION (if set)
+# KAMAL_RUNTIME
+
+echo "$KAMAL_PERFORMER deployed $KAMAL_VERSION to $KAMAL_DESTINATION in $KAMAL_RUNTIME seconds"

.kamal/hooks/post-proxy-reboot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Rebooted kamal-proxy on $KAMAL_HOSTS"

.kamal/hooks/pre-app-boot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Booting app version $KAMAL_VERSION on $KAMAL_HOSTS..."

.kamal/hooks/pre-build

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# A sample pre-build hook
+#
+# Checks:
+# 1. We have a clean checkout
+# 2. A remote is configured
+# 3. The branch has been pushed to the remote
+# 4. The version we are deploying matches the remote
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLES (if set)
+# KAMAL_DESTINATION (if set)
+
+if [ -n "$(git status --porcelain)" ]; then
+  echo "Git checkout is not clean, aborting..." >&2
+  git status --porcelain >&2
+  exit 1
+fi
+
+first_remote=$(git remote)
+
+if [ -z "$first_remote" ]; then
+  echo "No git remote set, aborting..." >&2
+  exit 1
+fi
+
+current_branch=$(git branch --show-current)
+
+if [ -z "$current_branch" ]; then
+  echo "Not on a git branch, aborting..." >&2
+  exit 1
+fi
+
+remote_head=$(git ls-remote $first_remote --tags $current_branch | cut -f1)
+
+if [ -z "$remote_head" ]; then
+  echo "Branch not pushed to remote, aborting..." >&2
+  exit 1
+fi
+
+if [ "$KAMAL_VERSION" != "$remote_head" ]; then
+  echo "Version ($KAMAL_VERSION) does not match remote HEAD ($remote_head), aborting..." >&2
+  exit 1
+fi
+
+exit 0

.kamal/hooks/pre-connect.sample

@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+
+# A sample pre-connect check
+#
+# Warms DNS before connecting to hosts in parallel
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLES (if set)
+# KAMAL_DESTINATION (if set)
+# KAMAL_RUNTIME
+
+hosts = ENV["KAMAL_HOSTS"].split(",")
+results = nil
+max = 3
+
+elapsed = Benchmark.realtime do
+  results = hosts.map do |host|
+    Thread.new do
+      tries = 1
+
+      begin
+        Socket.getaddrinfo(host, 0, Socket::AF_UNSPEC, Socket::SOCK_STREAM, nil, Socket::AI_CANONNAME)
+      rescue SocketError
+        if tries < max
+          puts "Retrying DNS warmup: #{host}"
+          tries += 1
+          sleep rand
+          retry
+        else
+          puts "DNS warmup failed: #{host}"
+          host
+        end
+      end
+
+      tries
+    end
+  end.map(&:value)
+end
+
+retries = results.sum - hosts.size
+nopes = results.count { |r| r == max }
+
+puts "Prewarmed %d DNS lookups in %.2f sec: %d retries, %d failures" % [ hosts.size, elapsed, retries, nopes ]

.kamal/hooks/pre-deploy.sample

@@ -0,0 +1,122 @@
+#!/usr/bin/env ruby
+
+# A sample pre-deploy hook
+#
+# Checks the Github status of the build, waiting for a pending build to complete for up to 720 seconds.
+#
+# Fails unless the combined status is "success"
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_COMMAND
+# KAMAL_SUBCOMMAND
+# KAMAL_ROLES (if set)
+# KAMAL_DESTINATION (if set)
+
+# Only check the build status for production deployments
+if ENV["KAMAL_COMMAND"] == "rollback" || ENV["KAMAL_DESTINATION"] != "production"
+  exit 0
+end
+
+require "bundler/inline"
+
+# true = install gems so this is fast on repeat invocations
+gemfile(true, quiet: true) do
+  source "https://rubygems.org"
+
+  gem "octokit"
+  gem "faraday-retry"
+end
+
+MAX_ATTEMPTS = 72
+ATTEMPTS_GAP = 10
+
+def exit_with_error(message)
+  $stderr.puts message
+  exit 1
+end
+
+class GithubStatusChecks
+  attr_reader :remote_url, :git_sha, :github_client, :combined_status
+
+  def initialize
+    @remote_url = github_repo_from_remote_url
+    @git_sha = `git rev-parse HEAD`.strip
+    @github_client = Octokit::Client.new(access_token: ENV["GITHUB_TOKEN"])
+    refresh!
+  end
+
+  def refresh!
+    @combined_status = github_client.combined_status(remote_url, git_sha)
+  end
+
+  def state
+    combined_status[:state]
+  end
+
+  def first_status_url
+    first_status = combined_status[:statuses].find { |status| status[:state] == state }
+    first_status && first_status[:target_url]
+  end
+
+  def complete_count
+    combined_status[:statuses].count { |status| status[:state] != "pending"}
+  end
+
+  def total_count
+    combined_status[:statuses].count
+  end
+
+  def current_status
+    if total_count > 0
+      "Completed #{complete_count}/#{total_count} checks, see #{first_status_url} ..."
+    else
+      "Build not started..."
+    end
+  end
+
+  private
+    def github_repo_from_remote_url
+      url = `git config --get remote.origin.url`.strip.delete_suffix(".git")
+      if url.start_with?("https://github.com/")
+        url.delete_prefix("https://github.com/")
+      elsif url.start_with?("[email protected]:")
+        url.delete_prefix("[email protected]:")
+      else
+        url
+      end
+    end
+end
+
+
+$stdout.sync = true
+
+begin
+  puts "Checking build status..."
+
+  attempts = 0
+  checks = GithubStatusChecks.new
+
+  loop do
+    case checks.state
+    when "success"
+      puts "Checks passed, see #{checks.first_status_url}"
+      exit 0
+    when "failure"
+      exit_with_error "Checks failed, see #{checks.first_status_url}"
+    when "pending"
+      attempts += 1
+    end
+
+    exit_with_error "Checks are still pending, gave up after #{MAX_ATTEMPTS * ATTEMPTS_GAP} seconds" if attempts == MAX_ATTEMPTS
+
+    puts checks.current_status
+    sleep(ATTEMPTS_GAP)
+    checks.refresh!
+  end
+rescue Octokit::NotFound
+  exit_with_error "Build status could not be found"
+end

.kamal/hooks/pre-proxy-reboot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Rebooting kamal-proxy on $KAMAL_HOSTS..."

.kamal/secrets-common

@@ -0,0 +1,7 @@
+# Secrets defined here are available for reference under registry/password, env/secret, builder/secrets,
+# and accessories/*/env/secret in config/deploy.yml. All secrets should be pulled from either
+# password manager, ENV, or a file. DO NOT ENTER RAW CREDENTIALS HERE! This file needs to be safe for git.
+
+# Option 1: Read secrets from the environment
+KAMAL_REGISTRY_USERNAME=$KAMAL_REGISTRY_USERNAME
+KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD

.ruby-version

@@ -1 +1 @@
-2.3.1
+2.6.10

Assetfile

@@ -1,8 +1,12 @@
 # All of rake-pipeline's web goodness lives here.
 require "rake-pipeline-web-filters"
+require "rake-pipeline-web-filters/tilt_filter"
 require "json"
 require "uglifier"
 
+# Please do not omit the trailing slash
+CHECKLIST_API_URL = ENV.fetch('CHECKLIST_API_URL', 'http://localhost:3000/checklist/')
+
 # All of our outputs will be relative to the `public/`
 # directory.
 output "public"
@@ -17,6 +21,23 @@ output "public"
 # inside this Assetfile will be relative to this directory.
 input "app" do
 
+  match "javascripts/config.js.erb" do
+    # ERB → JS
+    filter Rake::Pipeline::Web::Filters::TiltFilter,
+           {}, Struct.new(:checklist_api_url).new(CHECKLIST_API_URL)
+
+    # Wrap as a module so it can be required
+    minispade  :rewrite_requires => true,
+               :module_id_generator => proc { |input|
+                 input.path.sub(%r{\Ajavascripts/}, 'checklist/').sub(/\.js\.erb$/, '')
+               }
+
+    # Output to a standalone file
+    concat "js/app.js" do |input|
+      input.sub(/\.js\.erb$/, '.js')
+    end
+  end
+
   # Here we specify a match block so we can apply a filter to
   # a subset of the files in our input directory. We're turning
   # our handlebars template files into javascript files.

Dockerfile

@@ -0,0 +1,18 @@
+FROM --platform=linux/amd64 ruby:2.6.10-slim
+
+ENV BUNDLE_PATH="/usr/local/bundle"
+
+RUN apt-get update -qq && \
+  apt-get install --no-install-recommends -y \
+  curl build-essential git \
+  # Editor
+  vim nano \
+  # Clean up
+  && rm -rf /var/lib/apt/lists/*
+
+# Install Ruby bundler
+RUN bash -c "gem install bundler -v '1.17.3'"
+
+WORKDIR /app
+
+CMD ["tail", "-f", "/dev/null"]

Dockerfile.deploy

@@ -0,0 +1,29 @@
+ARG RUBY_VERSION
+FROM --platform=linux/amd64 ruby:${RUBY_VERSION}-slim AS build
+
+ENV BUNDLE_PATH="/usr/local/bundle"
+
+RUN apt-get update -qq && \
+  apt-get install --no-install-recommends -y \
+  curl build-essential git
+
+# Install Ruby bundler
+RUN gem install bundler -v '1.17.3' --no-document
+
+WORKDIR /app
+
+COPY Gemfile Gemfile.lock ./
+RUN bundle install
+
+COPY . .
+
+ARG CHECKLIST_API_URL
+RUN CHECKLIST_API_URL=${CHECKLIST_API_URL} bundle exec rakep build
+
+FROM nginx:1-alpine-slim
+
+COPY --from=build /app/public /usr/share/nginx/html
+COPY user_guide /usr/share/nginx/html/user_guide
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]