Run memcached locally

.github/workflows/continuous-integration.yml

@@ -9,10 +9,6 @@ jobs:
         os: [ubuntu-16.04, ubuntu-18.04]
         ruby: ["2.5.x", "2.x"]
         postgres: ["9.5", "12"]
-    services:
-      memcached:
-        image: memcached:latest
-        ports: ["11211:11211/udp"]
     env:
       RAILS_ENV: test
       OSM_MEMCACHE_SERVERS: 127.0.0.1
@@ -44,7 +40,7 @@ jobs:
         curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
         sudo apt-add-repository "deb https://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main"
         sudo apt-get -yqq update
-        sudo apt-get -yqq install postgresql-${{ matrix.postgres }} postgresql-client-${{ matrix.postgres }} libpq-dev
+        sudo apt-get -yqq install memcached postgresql-${{ matrix.postgres }} postgresql-client-${{ matrix.postgres }} libpq-dev
     - name: Install gems
       run: |
         gem install bundler --version "~> 1.17"