diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 590be4a..8b976cc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,36 +14,4 @@ before_script:
 - echo "$CI_JOB_TOKEN" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
 - env|sort
 
-x86_64:build:
-  variables:
-    VERSION: x86_64
-  stage: build
-  image: docker:latest
-  script:
-  - if [ -f init ]; then chmod 500 init; fi
-  - docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG} || true
-  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
-  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
-  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
-  tags:
-  - docker
-  - x86_64
-  only:
-  - master
-
-armv7l:build:
-  variables:
-    VERSION: armv7l
-  stage: build
-  image: docker:latest
-  script:
-  - if [ -f init ]; then chmod 500 init; fi
-  - docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG} || true
-  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
-  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
-  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
-  tags:
-  - docker
-  - armv7l
-  only:
-  - master
+include: .gitlab-docker-x86_64.yml
diff --git a/.gitlab-docker-x86_64.yml b/.gitlab-docker-x86_64.yml
new file mode 100644
index 0000000..7a80415
--- /dev/null
+++ b/.gitlab-docker-x86_64.yml
@@ -0,0 +1,16 @@
+x86_64:build:
+  variables:
+    VERSION: x86_64
+  stage: build
+  image: docker:latest
+  script:
+  - if [ -f init ]; then chmod 500 init; fi
+  - ([ -z "$REFRESH" ] && docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG}) || echo "true"
+  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
+  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
+  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
+  tags:
+  - docker
+  - x86_64
+  only:
+  - master
diff --git a/Dockerfile b/Dockerfile
index 62002d4..4c06540 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # NAME leenooks/smtp
 # VERSION latest
 
-FROM debian:stretch
+FROM debian:stretch-slim
 
 RUN apt-get update \
 	&& apt-get install sendmail sasl2-bin milter-greylist -yyq \