diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4bb867d0..25bbebde 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 ---
 # Author: Clayton Craft <clayton@craftyguy.net>
 
-image: python:3.7-slim-stretch
+image: alpine:latest
 
 cache:
   paths:
@@ -12,7 +12,7 @@ before_script:
   # venv created in CI_PROJECT_DIR for caching
   - "[[ ! -d venv ]] && virtualenv venv -p $(which python3)"
   - "source venv/bin/activate"
-  - "pip3 install pytest-cov python-coveralls pytest"
+  - "apk -q add py3-pytest-cov py3-coveralls py3-pytest"
   - "python3 --version"
   - "su pmos -c 'git config --global user.email postmarketos-ci@localhost' || true"
   - "su pmos -c 'git config --global user.name postmarketOS_CI' || true"
diff --git a/.gitlab/setup-pmos-environment.sh b/.gitlab/setup-pmos-environment.sh
index 4958060c..080ba428 100755
--- a/.gitlab/setup-pmos-environment.sh
+++ b/.gitlab/setup-pmos-environment.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 # This script is meant for the gitlab CI shared runners, not for
 # any specific runners. Specific runners are expected to provide
@@ -6,18 +6,17 @@
 # Author: Clayton Craft <clayton@craftyguy.net>
 
 # skip non-shared runner
-[[ -d "/home/pmos" ]] && echo "pmos user already exists, assume running on pre-configured runner" && exit
+[ -d "/home/pmos" ] && echo "pmos user already exists, assume running on pre-configured runner" && exit
 
 # mount binfmt_misc
 mount -t binfmt_misc none /proc/sys/fs/binfmt_misc
 
 # install dependencies (procps: /bin/kill)
-apt update
-apt install -q -y git sudo procps python3-pip
-pip3 install virtualenv
+apk update
+apk -q add git sudo bash openssl procps py3-virtualenv
 
 # create pmos user
 echo "Creating pmos user"
-useradd pmos -m -s /bin/bash -b "/home"
+adduser -s /bin/sh -h /home/pmos pmos
 chown -R pmos:pmos .
 echo 'pmos ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers