diff --git a/.env b/.env
new file mode 100644
index 0000000..2ae96b2
--- /dev/null
+++ b/.env
@@ -0,0 +1,3 @@
+ARCHITECTURE=arm64v8/
+RUBY_VERSION=2.6
+ORTOOLS_VERSION=v7.8 # select from https://github.com/google/or-tools/releases
diff --git a/.github/actions/build.sh b/.github/actions/build.sh
index 2115094..4fa4437 100755
--- a/.github/actions/build.sh
+++ b/.github/actions/build.sh
@@ -37,7 +37,7 @@ case $ORTOOLS_VERSION in
 esac
 
 echo "Download asset at ${ORTOOLS_URL}"
-docker build --build-arg ORTOOLS_URL=${ORTOOLS_URL} -f ./Dockerfile -t "${IMAGE_NAME}" .
+docker build --build-arg RUBY_VERSION="2.6" --build-arg ORTOOLS_URL=${ORTOOLS_URL} -f ./Dockerfile -t "${IMAGE_NAME}" .
 docker run -d --name optimizer -t "${IMAGE_NAME}"
 docker exec -i optimizer bash -c "LD_LIBRARY_PATH=/srv/or-tools/lib/ /srv/optimizer-ortools/tsp_simple -time_limit_in_ms 500 -intermediate_solutions -instance_file '/srv/optimizer-ortools/data/test_ortools_single_route_with_route_order' -solution_file '/tmp/optimize-or-tools-output'"
 
diff --git a/Dockerfile b/Dockerfile
index 7a00957..7d74e2a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
-# 1.0.13 is the latest version containing bundler 2 required for optimizer-api
-FROM phusion/passenger-ruby25:1.0.13
+ARG RUBY_VERSION
+ARG ARCHITECTURE
+
+FROM ${ARCHITECTURE}ruby:${RUBY_VERSION}
 
 ARG ORTOOLS_URL=${ORTOOLS_URL}
 
@@ -7,19 +9,6 @@ LABEL maintainer="Mapotempo <tech@mapotempo.com>"
 
 WORKDIR /srv/
 
-# Trick to install passenger-docker on Ruby 2.5. Othwerwise `apt-get update` fails with a
-# certificate error. See following links for explanantion:
-# https://issueexplorer.com/issue/phusion/passenger-docker/325
-# and
-# https://issueexplorer.com/issue/phusion/passenger-docker/322
-# Basically, DST Root CA X3 certificates are expired on Setember 2021 and apt-get cannot validate
-# with the old certificates and the certification correction is only done for Ruby 2.6+ on the
-# passenger-docker repo because Ruby 2.5 is EOL.
-RUN mv /etc/apt/sources.list.d /etc/apt/sources.list.d.bak
-RUN apt update && apt install -y ca-certificates
-RUN mv /etc/apt/sources.list.d.bak /etc/apt/sources.list.d
-# The above trick can be removed after Ruby version is increased.
-
 RUN apt-get update > /dev/null && \
   apt-get -y install git wget pkg-config build-essential cmake autoconf libtool zlib1g-dev lsb-release > /dev/null
 
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..2b16737
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,22 @@
+version: '3.7'
+x-app-args: &app-args
+  ARCHITECTURE: ${ARCHITECTURE}
+  RUBY_VERSION: ${RUBY_VERSION}
+  ORTOOLS_VERSION: ${ORTOOLS_VERSION}
+
+x-app: &default-app
+  volumes:
+    - ./:/srv/app/
+  env_file:
+    - ./.env
+
+services:
+  main:
+    <<: *default-app
+    build:
+      args:
+        <<: *app-args
+      context: .
+      dockerfile: Dockerfile
+    image: dev.example.com/mapotempo/optimizer-ortools
+    tty: true