Works but issues errors

[DsAtHuH]

Configuration

Docker-compose file

I am using a docker-compose.yml file in the project root folder as follows:

version: '3.7'

services:
    ssh:
      container_name: ssh
      depends_on:
        - my-container
      image: jeroenpeeters/docker-ssh
      volumes:
        - /var/run/docker.sock:/var/run/docker.sock
        - /usr/bin/docker:/usr/bin/docker
        - shared_volume:/.ssh
      environment:
        - FILTERS={"name":["^/my-container$$"]}
        - AUTH_MECHANISM=publicKey
        - AUTHORIZED_KEYS=/.ssh/authorized_keys
      ports:
        - 2222:22
        - 8022:8022
    my-container:
      container_name: my-container
      build:
        context: .
        args:
          SSH_PUBLIC_KEY: ${SSH_PUBLIC_KEY}
      restart: always
      volumes:
        - shared_volume:/var/.ssh
volumes:
    shared_volume:

Dockefile

I am also using a Dockerfile file in the project root folder:

FROM IMAGE:VERSION
ARG SSH_PUBLIC_KEY
# declare a volume at location /var/.ssh
RUN mkdir /var/.ssh
RUN echo "$SSH_PUBLIC_KEY" > /var/.ssh/authorized_keys
VOLUME /var/.ssh

EXPOSE 22
CMD bash

Behaviour

I works when opening through the browser and URL rendering the following characters in the terminal within the browser:

Connection established                                                                                           

 ###############################################################                                                 
 ## Docker SSH ~ Because every container should be accessible ##                                                 
 ###############################################################                                                 
 ## container | /my-container                                 ##                                                 
 ###############################################################

The Errors

When accessing through the browser and URL localhost:8022:

When connecting to port 8022 through browser it works but issues the following error within the ssh container:

TypeError: Cannot read property 'session:window-change' of undefined
  at /usr/src/app/src/webserver.coffee:66:33
  at Layer.handle [as handle_request] (/usr/src/app/node_modules/express/lib/router/layer.js:95:5)
  at next (/usr/src/app/node_modules/express/lib/router/route.js:131:13)
  at Route.dispatch (/usr/src/app/node_modules/express/lib/router/route.js:112:3)
  at Layer.handle [as handle_request] (/usr/src/app/node_modules/express/lib/router/layer.js:95:5)
  at /usr/src/app/node_modules/express/lib/router/index.js:277:22
  at param (/usr/src/app/node_modules/express/lib/router/index.js:349:14)
  at param (/usr/src/app/node_modules/express/lib/router/index.js:365:14)
  at Function.process_params (/usr/src/app/node_modules/express/lib/router/index.js:410:3)
  at next (/usr/src/app/node_modules/express/lib/router/index.js:271:10)
  at /usr/src/app/node_modules/body-parser/lib/read.js:129:5
  at invokeCallback (/usr/src/app/node_modules/raw-body/index.js:262:16)
  at done (/usr/src/app/node_modules/raw-body/index.js:251:7)
  at IncomingMessage.onEnd (/usr/src/app/node_modules/raw-body/index.js:307:7)
  at emitNone (events.js:86:13)
  at IncomingMessage.emit (events.js:185:7)
  at endReadableNT (_stream_readable.js:974:12)
  at _combinedTickCallback (internal/process/next_tick.js:80:11)
  at process._tickCallback (internal/process/next_tick.js:104:9)

When trying to access through ssh:

I am using the command ssh -oKexAlgorithms=+curve25519-sha256 -i ~/.ssh/id_ed25519 root@localhost -p 2222 -vvv which results in:

Unable to negotiate with 127.0.0.1 port 2222: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group1-sha1