Change some environment variables for easier handling.

.deploy/docker/travis.sh

@@ -1,13 +1,12 @@
 #!/usr/bin/env bash
 
-echo $TRAVIS_DIST
+echo "I am building channel ${CHANNEL} for version ${VERSION} on architecture ${ARCH}."
+
 echo '{"experimental":true}' | sudo tee /etc/docker/daemon.json
 mkdir $HOME/.docker
 touch $HOME/.docker/config.json
 echo '{"experimental":"enabled"}' | sudo tee $HOME/.docker/config.json
 sudo service docker restart
-docker version -f '{{.Server.Experimental}}'
-docker version
 
 # build everything
 .deploy/docker/build-$ARCH.sh

.travis.yml

@@ -10,21 +10,26 @@ branches:
 services:
   - docker
 
+env:
+  - VERSION=4.8.2
+  - CHANNEL=stable
+
+
 jobs:
   include:
     - dist: xenial
       arch: amd64
-      env: ARCH=amd64 VERSION=4.8.2
+      env: ARCH=amd64
       stage: build
       script: ./.deploy/docker/travis.sh
     - dist: xenial
       arch: amd64
-      env: ARCH=arm VERSION=4.8.2
+      env: ARCH=arm
       stage: build
       script: ./.deploy/docker/travis.sh
     - dist: xenial
       arch: arm64
-      env: ARCH=arm64 VERSION=4.8.2
+      env: ARCH=arm64
       stage: build
       script: ./.deploy/docker/travis.sh
     - dist: xenial