Merge branch 'fix-pipeline' into '0.2'

Pin hydra release to v1.8

See merge request openappstack/single-sign-on!38

.gitlab-ci.yml

@@ -104,7 +104,7 @@ behave-integration:
       alias: consent
     - name: ${CI_REGISTRY_IMAGE}/logout_provider:${CI_COMMIT_REF_NAME}
       alias: logout
-    - name: oryd/hydra:latest
+    - name: docker.io/oryd/hydra:v1.8
       alias: hydra
       command:
         - serve

test/integration_tests/Dockerfile

@@ -10,6 +10,8 @@ RUN apk --no-cache add \
     libc-dev \
     openssl-dev \
     bash \
+    rust \
+    cargo \
     gcc
 
 RUN pip3 install --no-cache-dir -r requirements.txt