Status bar icons do not appear in Linux using Docker

[machawk1]

Using identical commits, fairly easy to reproduce using the Docker instructions in the README.

Linux:

macOS:

[machawk1]

These include the characters 🕒 and ❗, among others.

[machawk1]

Installing ttf-ancient-fonts while in the container fixes this.

[machawk1]

Oddly, when I add this dependency to the Dockerfile, the docker build execution fails:

% docker build -t machawk1/wail .
[+] Building 3.3s (8/15)                                                                                                                     
 => [internal] load build definition from Dockerfile                                                                                    0.1s
 => => transferring dockerfile: 1.50kB                                                                                                  0.1s
 => [internal] load .dockerignore                                                                                                       0.0s
 => => transferring context: 34B                                                                                                        0.0s
 => [internal] load metadata for docker.io/library/ubuntu:18.10                                                                         1.0s
 => [auth] library/ubuntu:pull token for registry-1.docker.io                                                                           0.0s
 => [internal] load build context                                                                                                       0.8s
 => => transferring context: 585.11kB                                                                                                   0.8s
 => [ 1/10] FROM docker.io/library/ubuntu:18.10@sha256:7d657275047118bb77b052c4c0ae43e8a289ca2879ebfa78a703c93aa8fd686c                 0.0s
 => CACHED [ 2/10] RUN        ln -snf /usr/share/zoneinfo/Europe/Minsk /etc/localtime && echo Europe/Minsk > /etc/timezone              0.0s
 => ERROR [ 3/10] RUN        apt update && apt install -y              apt-file              git              libgtk-3-0                2.1s
------                                                                                                                                       
 > [ 3/10] RUN        apt update && apt install -y              apt-file              git              libgtk-3-0              libnotify4              libsdl1.2debian              libsm6              libxxf86vm1              python3              python3-pip              x11vnc              xvfb              language-pack-en              ttf-ancient-fonts        &&  rm -rf /var/lib/apt/lists/*:                           
#7 1.335                                                                                                                                     
#7 1.335 WARNING: apt does not have a stable CLI interface. Use with caution in scripts.                                                     
#7 1.335 
#7 1.505 Ign:1 http://security.ubuntu.com/ubuntu cosmic-security InRelease
#7 1.526 Err:2 http://security.ubuntu.com/ubuntu cosmic-security Release
#7 1.526   404  Not Found [IP: 91.189.91.38 80]
#7 1.596 Ign:3 http://archive.ubuntu.com/ubuntu cosmic InRelease
#7 1.677 Ign:4 http://archive.ubuntu.com/ubuntu cosmic-updates InRelease
#7 1.759 Ign:5 http://archive.ubuntu.com/ubuntu cosmic-backports InRelease
#7 1.843 Err:6 http://archive.ubuntu.com/ubuntu cosmic Release
#7 1.843   404  Not Found [IP: 91.189.88.142 80]
#7 1.926 Err:7 http://archive.ubuntu.com/ubuntu cosmic-updates Release
#7 1.926   404  Not Found [IP: 91.189.88.142 80]
#7 2.009 Err:8 http://archive.ubuntu.com/ubuntu cosmic-backports Release
#7 2.009   404  Not Found [IP: 91.189.88.142 80]
#7 2.023 Reading package lists...
#7 2.044 E: The repository 'http://security.ubuntu.com/ubuntu cosmic-security Release' does not have a Release file.
#7 2.044 E: The repository 'http://archive.ubuntu.com/ubuntu cosmic Release' does not have a Release file.
#7 2.044 E: The repository 'http://archive.ubuntu.com/ubuntu cosmic-updates Release' does not have a Release file.
#7 2.044 E: The repository 'http://archive.ubuntu.com/ubuntu cosmic-backports Release' does not have a Release file.
------
executor failed running [/bin/sh -c apt update && apt install -y              apt-file              git              libgtk-3-0              libnotify4              libsdl1.2debian              libsm6              libxxf86vm1              python3              python3-pip              x11vnc              xvfb              language-pack-en              ttf-ancient-fonts        &&  rm -rf /var/lib/apt/lists/*]: exit code: 100

[machawk1]

This might instead be an issue of using a separate branch where Ubuntu 18 is still specified. I will merg in the Dockerfile from osagnostic to the working branch, add the new dependency, and testing in the visual results in the container.

[machawk1]

Adding the above dependency does generate a GUI with the symbols in-place.