improve CI config

.gitlab-ci.yml

-# Official language image. Look for the different tagged releases at:
-# https://hub.docker.com/r/library/rust/tags/
-image: "rust:latest"
+default:
+  # Official language image. Look for the different tagged releases at:
+  # https://hub.docker.com/r/library/rust/tags/
+  image: "rust:latest"
 
 # Optional: Pick zero or more services to be used on all builds.
 # Only needed when using a docker container to run your tests in.
@@ -19,7 +20,7 @@ image: "rust:latest"
 stages:
   - test
   - build
-  # - deploy
+  - deploy
 
 # Build the main application (currently mostly useless)
 build-main:
@@ -48,7 +49,7 @@ test:cargo:
     - export HTTP_PROXY=lxproxy01.gsi.de:3128
     - export https_proxy=lxproxy01.gsi.de:3128
     - export http_proxy=lxproxy01.gsi.de:3128
-    - rustc --version && cargo --version  # Print version info for debugging
+    - rustc --version && cargo --version # Print version info for debugging
     - cargo test --workspace
 test:clippy:
   stage: test
@@ -58,7 +59,7 @@ test:clippy:
     - export https_proxy=lxproxy01.gsi.de:3128
     - export http_proxy=lxproxy01.gsi.de:3128
     - cargo clippy --workspace
-  allow_failure: true 
+  allow_failure: true
 # Optional: Use a third party library to generate gitlab junit reports
 # test:junit-report:
 #   script: