Adds Dockerfile for sftp-test-env

currently uploaded on hub.docker.com/swissbib/sftp-test-env.
It has to be there to be used as a service.

.gitlab-ci.yml

+services:
+  - swissbib/sftp-test-env:latest
+
 variables:
   DOCKER_TLS_CERTDIR: ""
 

env/Dockerfile

+FROM atmoz/sftp:alpine
+
+COPY create_test_env.sh /etc/sftp.d/create_test_env.sh
+COPY ssh_host_rsa_key /etc/ssh/ssh_host_rsa_key
+COPY ssh_host_rsa_key.pub /etc/ssh/ssh_host_rsa_key.pub:ro
+COPY test.csv /home/user/sftp/test_institution_1/test_record_set_1/test.csv
\ No newline at end of file

src/test/resources/app.yml

 sftp:
-  host: localhost
+  host: sftp-test-env
   port: 22
   user: user
   password: password