ci: fix docker login using --password-stdin

.drone.yml

@@ -36,8 +36,10 @@ steps:
   - name: deploy
     image: registry.greenbaum.cloud/library/triton-docker
     environment:
-      DOCKER_CONFIG:
-        from_secret: docker_config
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
       TRITON_SSH_KEY:
         from_secret: triton_ssh_key
       TRITON_ACCOUNT:
@@ -48,7 +50,6 @@ steps:
     commands:
       - mkdir -p $HOME/.ssh $HOME/.docker
       - echo -e "$TRITON_SSH_KEY" > $HOME/.ssh/id_rsa
-      - echo -e "$DOCKER_CONFIG" > $HOME/.docker/config.json
       - /usr/local/bin/docker-entrypoint.sh ./deploy.sh $DRONE_TAG
 
 trigger:

deploy.sh

@@ -17,7 +17,7 @@ if [[ -z "$TAG" ]]; then
 fi
 
 # Login to Greenbaum's private docker registry
-docker login registry.greenbaum.cloud
+echo "$DOCKER_PASSWORD" | docker login --username "$DOCKER_USERNAME" --password-stdin registry.greenbaum.cloud
 
 # Use our tag for docker-compose
 export DEPLOY_TAG="$TAG"