diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1d3092d..e8927fd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,28 +1,37 @@
-# This file is a template, and might need editing before it works on your project.
-docker-build-master:
-  # Official docker image.
-  image: docker:latest
-  stage: build
+stages:
+  - build
+  - test
+  - release
+
+variables:
+  CONTAINER_TEST_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  CONTAINER_RELEASE_IMAGE: $CI_REGISTRY_IMAGE:latest
+
+build:
+  image: docker:19.03.8
   services:
-    - docker:dind
-  before_script:
-    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
+  - docker:19.03.8-dind
+  stage: build
   script:
-    - docker build --pull -t "$CI_REGISTRY_IMAGE" .
-    - docker push "$CI_REGISTRY_IMAGE"
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build --pull -t $CONTAINER_TEST_IMAGE .
+    - docker push $CONTAINER_TEST_IMAGE
+
+test-gcc-version:
+  stage: test
+  image: $CONTAINER_TEST_IMAGE
+  script:
+    - tests/smoke.sh
+
+release:
+  image: docker:19.03.8
+  services:
+  - docker:19.03.8-dind
+  stage: release
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker pull $CONTAINER_TEST_IMAGE
+    - docker tag $CONTAINER_TEST_IMAGE $CONTAINER_RELEASE_IMAGE
+    - docker push $CONTAINER_RELEASE_IMAGE
   only:
     - master
-
-docker-build:
-  # Official docker image.
-  image: docker:latest
-  stage: build
-  services:
-    - docker:dind
-  before_script:
-    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
-  script:
-    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
-    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
-  except:
-    - master
diff --git a/tests/smoke.sh b/tests/smoke.sh
new file mode 100755
index 0000000..7241f80
--- /dev/null
+++ b/tests/smoke.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -ex
+
+which arm-none-eabi-gcc
+arm-none-eabi-gcc -v