Improved one-liners for cleaning up stale local branches after merge. Inspired by the CIA's leaked dev docs and HN discussion.
# Auto-detect default branch (main/master) from remote
function _git_default_branch() {
git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's@^refs/remotes/origin/@@' || echo "main"
Deployments currently use docker compose up -d --pull always --force-recreate, which stops and recreates all containers simultaneously, causing 10-30 seconds of downtime per deploy. docker-rollout eliminates this by scaling up new containers alongside old ones, health-checking, then removing old containers — zero-downtime.
The original investigation (gist from ~4 months ago) identified removing container_name as a blocker. That's now resolved — PR #628 confirmed all application services have no container_name and no host ports:.
First deploy does NOT require manually stopping stacks. docker-rollout works with running containers — it scales up alongside them, waits for health, then removes old ones. No manual intervention needed.
If you're trying to install the postgresql gem pg and it is failing with the following error message:
Installing pg 1.2.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: ~/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/gems/pg-1.2.3/ext
~/.rbenv/versions/3.0.0/bin/ruby -I ~/.rbenv/versions/3.0.0/lib/ruby/3.0.0 -r ./siteconf20210125-97201-pycpo.rb extconf.rb
| curl https://thispersondoesnotexist.com/image -o ~/$(date +%s).jpg |
app/helpers/application_helper.rb: def external_link_to(name = nil, options = nil, html_options = nil, &block)
opts = { target: '_blank', rel: 'nofollow noopener' }
if block_given?
options ||= {}
options = options.merge(opts)
else
html_options ||= {}
html_options = html_options.merge(opts)
| f = proc do |p| | |
| Hash.new.merge( | |
| ->{ p.odd? }.call => 'odd', | |
| ->{ p.even? }.call => 'even' | |
| ).fetch(true) | |
| end | |
| => #<Proc:0x00007ff91188af38@(irb):1> | |
| > f[1] | |
| => "odd" |