Update Dockerfile to reduce tex space

6 jobs for master in 14 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Docker
failed #264984
ljt18_webapp
build docker

00:00:14

failed #264942
ljt18_webapp
build docker

00:00:06

 
  Build
skipped #264943
compile java
 
  Test
skipped #264944
testing
 
  Staging
skipped #264945
ljt18_webapp
deploy to vm
 
  Production
skipped #264946
allowed to fail manual
deploy to heroku
 
Name Stage Failure
failed
build docker Build Docker
Get:18 http://archive.ubuntu.com/ubuntu bionic-backports/universe amd64 Packages [4241 B]
Fetched 17.5 MB in 2s (8615 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package texlive-latex-core
The command '/bin/sh -c apt-get -y update && apt-get -y install git maven openjdk-11-jre openjdk-11-jdk pandoc ruby=1:2.5.1 curl texlive-latex-core' returned a non-zero code: 100
ERROR: Job failed: exit status 1