init

.gitlab-ci.yml

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+stages:
+ - build
+
+
+image: docker:latest
+
+services:
+  - name: docker:dind
+    entrypoint: ["env", "-u", "DOCKER_HOST"]
+    command: ["dockerd-entrypoint.sh"]
+variables:
+  DOCKER_HOST: tcp://docker:2375/
+  DOCKER_DRIVER: overlay2
+  # See https://github.com/docker-library/docker/pull/166
+  DOCKER_TLS_CERTDIR: ""
+
+build:
+  stage: build
+  tags:
+    - dind
+  script:
+    - docker build --no-cache -t luki42/ssh:latest .
+    - docker login -p $DockerPWD -u luki42
+    - docker push luki42/ssh:latest

Dockerfile

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+FROM alpine:3.7
+RUN apk add --no-cache openssh-client

README.md

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+# Docker SSH image
+
+Updated on a weekly basis.
+
+## Example Gitlab job:
+
+```
+Test_Deploy:
+  stage: deploy
+  image: luki42/ssh:latest
+  needs:
+    - Frontend_Tests
+    - Backend_Tests
+    - Debian_Server
+  only:
+    - master
+  script:
+    - eval $(ssh-agent -s)
+    - ssh-add <(echo "$SSH_PRIVATE_KEY")
+    - mkdir -p ~/.ssh
+    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
+    - scp deb/Testpackage.deb root@192.168.0.42:/tmp/
+    - ssh root@192.168.0.42 "DEBIAN_FRONTEND=noninteractive apt-get --reinstall  -y -qq install /tmp/Testpackage.deb && rm /tmp/Testpackage.deb"
+```