[GUACAMOLE-1751] Container fails to start when LOGBACK_LEVEL environment variable is set

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 1.5.0
• Component/s: guacamole-docker
• Environment: x86 CentOS Stream 8 with Docker version 20.10.13, build a224086

Language

Docker

• Assignee: Unassigned
• Reporter: Jans Rautenbach
• Created: 15/Mar/23 06:08
• Updated: 15/Mar/23 07:09
• Resolved: 15/Mar/23 07:09

Description

Symptom

When starting up the docker image `guacamole/guacamole:latest`, with the environment variable `LOGBACK_LEVEL` set to anything, the container fails to start. The container logs only show the following line:

/opt/guacamole/bin/start.sh: 1169: unzip: not found

Preliminary Investigation

This is the code around the aforementioned line above:

if [ -n "$LOGBACK_LEVEL" ]; then
    unzip -o -j /opt/guacamole/guacamole.war WEB-INF/classes/logback.xml -d $GUACAMOLE_HOME
    sed -i "s/level=\"info\"/level=\"$LOGBACK_LEVEL\"/" $GUACAMOLE_HOME/logback.xml
fi

The code only executes if the `LOGBACK_LEVEL` environment variable is set, and then the unzip command fails, likely because it is not installed in the image.

Proposed solution

Install the unzip program by adding it to the relevant Dockerfile.

Issue Links

• duplicates: GUACAMOLE-1628 Docker image of guacamole client is missing unzip