Test built packages

.gitlab-ci.yml

-package:jessie:
+build-deb:jessie:
   stage: build
   image: containers.ethitter.com:443/docker/images/debian:jessie
   before_script:
@@ -17,7 +17,16 @@ package:jessie:
       - nginx_${NGINX_VERSION_JESSIE}*
       - nginx-dbgsym_*
 
-package:stretch:
+test-deb:jessie:
+  stage: test
+  image: containers.ethitter.com:443/docker/images/debian:jessie
+  script:
+    - dpkg -i nginx_${NGINX_VERSION_JESSIE}*.deb
+    - nginx -V
+  dependencies:
+    - build-deb:jessie
+
+build-deb:stretch:
   stage: build
   image: containers.ethitter.com:443/docker/images/debian:stretch
   before_script:
@@ -36,7 +45,16 @@ package:stretch:
       - nginx_${NGINX_VERSION_STRETCH}*
       - nginx-dbgsym_*
 
-package:buster:
+test-deb:stretch:
+  stage: test
+  image: containers.ethitter.com:443/docker/images/debian:stretch
+  script:
+    - dpkg -i nginx_${NGINX_VERSION_STRECTH}*.deb
+    - nginx -V
+  dependencies:
+    - build-deb:stretch
+
+build-deb:buster:
   stage: build
   image: containers.ethitter.com:443/docker/images/debian:buster
   before_script:
@@ -54,3 +72,12 @@ package:buster:
     paths:
       - nginx_${NGINX_VERSION_BUSTER}*
       - nginx-dbgsym_*
+
+test-deb:buster:
+  stage: test
+  image: containers.ethitter.com:443/docker/images/debian:buster
+  script:
+    - dpkg -i nginx_${NGINX_VERSION_BUSTER}*.deb
+    - nginx -V
+  dependencies:
+    - build-deb:buster