Unable to enable Apache Guacamole extensions through Docker Compose

[Sidney Ramos Neto <si...@sidia.com>]

Dear all,

Unable to enable 'branding.jar' extension to customize/brand Guacamole login screen.

When trying to deploy Guacamole through the compose file, the error "cp: '/opt/guacamole/./extensions': Operation not supported" is returned in the guacamole service.

Docker Compose:
  # guacamole
  guacamole:
    depends_on:
    - guacd
    - postgres
    environment:
      GUACAMOLE_HOME: /opt/guacamole
      GUACD_HOSTNAME: guacd
      POSTGRESQL_DATABASE: guacamole_db
      POSTGRESQL_HOSTNAME: postgres
      POSTGRESQL_PASSWORD: 'Sidia2023'
      POSTGRESQL_USER: guacamole_user
    image: guacamole/guacamole:latest
    links:
    - guacd
    networks:
      network:
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints: [node.role == worker]
    ports:
      - 8080:8080/tcp
    restart: always
    volumes:
       - . /extensions:/opt/guacamole/extensions

Could anyone help with this resolution?

Thanks!

Best Regards,
[cid:image001.png@01DB1AFE.C1B1EC40]

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Re: Unable to enable Apache Guacamole extensions through Docker Compose

[Michael Jumper <mj...@apache.org>]

On 10/10/24 7:37 AM, Sidney Ramos Neto wrote:
> Dear all,
> 
> Unable to enable 'branding.jar' extension to customize/brand Guacamole 
> login screen.
> 
> When trying to deploy Guacamole through the compose file, the error 
> */"cp: ‘/opt/guacamole/./extensions’: Operation not supported"/* is 
> returned in the guacamole service.
> 
> Docker Compose:
> ...
>      environment:
>        GUACAMOLE_HOME: /opt/guacamole
> ...
>      volumes:
>         - . /extensions:/opt/guacamole/extensions
> 

The "/opt/guacamole" path is already used by the image for its own 
binaries, so specifying it as the GUACAMOLE_HOME template is likely 
causing trouble. You will need to use a different path that isn't 
already being used by the image for something else.

- Mike

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