diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 38e01b03c91643257521ae329b31a2363e41da4c..fc6addcad71394c1df6022e0671fe3859340cb37 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,8 +26,10 @@ stages:
 
 before_script:
 #  - unset DOCKER_TLS_VERIFY
+  - nix shell nixpkgs#coreutils -c ls -lah /certs/client/
   - nix shell nixpkgs#coreutils -c mkdir -p /certs/client/
   - nix shell nixpkgs#coreutils -c ln -fs /etc/ssl/certs/ca-bundle.crt /certs/client/ca.pem
+  - nix shell nixpkgs#coreutils -c ls -lah /certs/client/
   - echo > .env-gitlab-ci
   - variables=("HOME=$HOME" "CI_COMMIT_REF_NAME=$CI_COMMIT_REF_NAME" "CI_REPOSITORY_URL=$CI_REPOSITORY_URL" "GITLAB_TOKEN=$GITLAB_TOKEN" "CI_JOB_TOKEN=$CI_JOB_TOKEN" "GITLAB_USER_EMAIL=$GITLAB_USER_EMAIL" "GITLAB_USER_NAME=\"$GITLAB_USER_NAME\"" "CI_REGISTRY_USER=$CI_REGISTRY_USER" "CI_PROJECT_ID=$CI_PROJECT_ID" "CI_PROJECT_DIR=$CI_PROJECT_DIR" "CI_API_V4_URL=$CI_API_V4_URL" "CI_PROJECT_NAME=$CI_PROJECT_NAME" "CI_COMMIT_SHORT_SHA=$CI_COMMIT_SHORT_SHA"); for var in "${variables[@]}"; do echo "$var" >> .env-gitlab-ci; done
   - cat .env-gitlab-ci
diff --git a/devenv.nix b/devenv.nix
index 4fb5ef36fdac693e6f531db5e840039c5cba4043..52e632e14def621a4cd6d52841ff8136fd701379 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -325,8 +325,10 @@ stages:
 
 before_script:
 #  - unset DOCKER_TLS_VERIFY
+  - nix shell nixpkgs#coreutils -c ls -lah /certs/client/
   - nix shell nixpkgs#coreutils -c mkdir -p /certs/client/
   - nix shell nixpkgs#coreutils -c ln -fs /etc/ssl/certs/ca-bundle.crt /certs/client/ca.pem
+  - nix shell nixpkgs#coreutils -c ls -lah /certs/client/
   - echo > .env-gitlab-ci
   - variables=("HOME=$HOME" "CI_COMMIT_REF_NAME=$CI_COMMIT_REF_NAME" "CI_REPOSITORY_URL=$CI_REPOSITORY_URL" "GITLAB_TOKEN=$GITLAB_TOKEN" "CI_JOB_TOKEN=$CI_JOB_TOKEN" "GITLAB_USER_EMAIL=$GITLAB_USER_EMAIL" "GITLAB_USER_NAME=\"$GITLAB_USER_NAME\"" "CI_REGISTRY_USER=$CI_REGISTRY_USER" "CI_PROJECT_ID=$CI_PROJECT_ID" "CI_PROJECT_DIR=$CI_PROJECT_DIR" "CI_API_V4_URL=$CI_API_V4_URL" "CI_PROJECT_NAME=$CI_PROJECT_NAME" "CI_COMMIT_SHORT_SHA=$CI_COMMIT_SHORT_SHA"); for var in "''${variables[@]}"; do echo "$var" >> .env-gitlab-ci; done
   - cat .env-gitlab-ci
diff --git a/runnable-sftp_test.go b/runnable-sftp_test.go
index d0ac05b5a2aae73386462c6d2576a062ddb3eb30..0f0c999950097b65a76f39bd6907bb7c2a5f7fee 100644
--- a/runnable-sftp_test.go
+++ b/runnable-sftp_test.go
@@ -8,6 +8,7 @@ import (
 	"github.com/docker/docker/client"
 	"github.com/docker/go-connections/nat"
 	"github.com/stretchr/testify/assert"
+	"io"
 	"net"
 	"os"
 	"testing"
@@ -30,7 +31,7 @@ func startSFTPTestDockerImageAndContainer(t *testing.T, host string, port string
 	}
 
 	//if debug image pull, comment out the following lines
-	//_, _ = io.Copy(os.Stdout, reader)
+	_, _ = io.Copy(os.Stdout, reader)
 	_ = reader
 
 	hostConfig := &container.HostConfig{