I am trying to install Instana on docker, but when configuring the repository for RHEL there is a variable called DOWNLOAD_KEY=<download_key>
how can I get that variable "DOWNLOAD_KEY"?
export DOWNLOAD_KEY=<download_key>
cat << EOF > /etc/yum.repos.d/Instana-Product.repo
[instana-product]
name=Instana-Product
baseurl=https://_:$DOWNLOAD_KEY@artifact-public.instana.io/artifactory/rel-rpm-public-virtual/
enabled=1
gpgcheck=0
gpgkey=https://_:$DOWNLOAD_KEY@artifact-public.instana.io/artifactory/api/security/keypair/public/repositories/rel-rpm-public-virtual
repo_gpgcheck=1
EOF