Problem with db:create

[kostjaz]

Trying to install openstreetmap-website on Ubintu 16.04 with the INSTALL.md
I've got such messege after bundle exec rake db:create

pngcrush worker: pngcrush not found; please provide proper binary or disable this worker (--no-pngcrush argument or :pngcrush => false through options)
advpng worker: advpng not found; please provide proper binary or disable this worker (--no-advpng argument or :advpng => false through options)
optipng worker: optipng not found; please provide proper binary or disable this worker (--no-optipng argument or :optipng => false through options)
pngquant worker: pngquant not found; please provide proper binary or disable this worker (--no-pngquant argument or :pngquant => false through options)
jhead worker: jhead not found, jpegtran not found; please provide proper binary or disable this worker (--no-jhead argument or :jhead => false through options)
jpegoptim worker: jpegoptim not found; please provide proper binary or disable this worker (--no-jpegoptim argument or :jpegoptim => false through options)
jpegtran worker: jpegtran not found; please provide proper binary or disable this worker (--no-jpegtran argument or :jpegtran => false through options)
gifsicle worker: gifsicle not found; please provide proper binary or disable this worker (--no-gifsicle argument or :gifsicle => false through options)
svgo worker: svgo not found; please provide proper binary or disable this worker (--no-svgo argument or :svgo => false through options)
Created database 'openstreetmap'
Created database 'osm_test'

So, I tried to google that, and read that it's a problem with image_optim.
I have 0.26.3 version

$ bundle exec image_optim --info
image_optim v0.26.3
config:
verbose: true
nice: 10
threads: 2
pack: false
skip_missing_workers: false
allow_lossy: false
cache_dir:
cache_worker_digests: false
PATH: /var/lib/gems/2.5.0/bin:/home/openstreetmap/bin:/home/openstreetmap/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin:/var/lib/gems/2.5.0/gems/image_optim-0.26.3/vendor
Resolved jpegrescan 1a762f62 at /var/lib/gems/2.5.0/gems/image_optim-0.26.3/vendor/jpegrescan
Bin resolving errors:
pngcrush worker: pngcrush not found; please provide proper binary or disable this worker (--no-pngcrush argument or :pngcrush => false through options)
pngout worker: pngout not found; please provide proper binary or disable this worker (--no-pngout argument or :pngout => false through options)
advpng worker: advpng not found; please provide proper binary or disable this worker (--no-advpng argument or :advpng => false through options)
optipng worker: optipng not found; please provide proper binary or disable this worker (--no-optipng argument or :optipng => false through options)
pngquant worker: pngquant not found; please provide proper binary or disable this worker (--no-pngquant argument or :pngquant => false through options)
jhead worker: jhead not found, jpegtran not found; please provide proper binary or disable this worker (--no-jhead argument or :jhead => false through options)
jpegoptim worker: jpegoptim not found; please provide proper binary or disable this worker (--no-jpegoptim argument or :jpegoptim => false through options)
jpegtran worker: jpegtran not found; please provide proper binary or disable this worker (--no-jpegtran argument or :jpegtran => false through options)
gifsicle worker: gifsicle not found; please provide proper binary or disable this worker (--no-gifsicle argument or :gifsicle => false through options)
svgo worker: svgo not found; please provide proper binary or disable this worker (--no-svgo argument or :svgo => false through options)
/var/lib/gems/2.5.0/gems/image_optim-0.26.3/lib/image_optim/worker/class_methods.rb:73:in create_all' /var/lib/gems/2.5.0/gems/image_optim-0.26.3/lib/image_optim/worker/class_methods.rb:44:in create_all_by_format'
/var/lib/gems/2.5.0/gems/image_optim-0.26.3/lib/image_optim.rb:88:in initialize' /var/lib/gems/2.5.0/gems/image_optim-0.26.3/lib/image_optim/runner.rb:54:in new'
/var/lib/gems/2.5.0/gems/image_optim-0.26.3/lib/image_optim/runner.rb:54:in initialize' /var/lib/gems/2.5.0/gems/image_optim-0.26.3/bin/image_optim:17:in new'
/var/lib/gems/2.5.0/gems/image_optim-0.26.3/bin/image_optim:17:in <top (required)>' /usr/local/bin/image_optim:23:in load'
/usr/local/bin/image_optim:23:in `

'

Which version of image_optim should I install?

[kostjaz]

OK, my solution for that:

vi Gemfile
gem "image_optim", "~> 0.25"
gem "image_optim_pack", "= 0.2.3"

sudo gem install image_optim
sudo gem install image_optim_pack
sudo apt install -y npm nodejs

sudo npm install -g svgo
sudo ln -s /usr/bin/nodejs /usr/bin/node

[tomhughes]

Those are just warnings and you can ignore them.