before install specific to OS

.ci/before_install_osx.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -ev
+
+brew update
+brew install docker
+# hack to address problem with using DOCKER_BUILDKIT=1, inspired by:
+# * https://github.com/rootless-containers/usernetes/blob/master/.travis.yml
+#
+# links discussing the issue:
+# * https://github.com/moby/buildkit/issues/606#issuecomment-453959632
+# * https://travis-ci.community/t/docker-builds-are-broken-if-buildkit-is-used-docker-buildkit-1/2994
+# * https://github.com/moby/moby/issues/39120
+
+# IS THIS HACK NEEDED FOR MAC?
+#docker --version
+#cat /etc/docker/daemon.json
+#rm -f /etc/docker/daemon.json
+#systemctl restart docker

.travis.yml

@@ -1,8 +1,8 @@
 language: go
 jobs:
   include:
-    - os: linux
-      dist: bionic
+    #- os: linux
+    #  dist: bionic
     - os: osx
 services:
 - docker
@@ -14,9 +14,14 @@ env:
   - DOCKERHUB_REPO=avaplatform/gecko
   - secure: "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"
   - secure: "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"
-before_install: .ci/before_install.sh
+before_install: 
+ - if [ "$TRAVIS_OS_NAME" = "osx" ]; then .ci/before_install_osx.sh; fi
+ - if [ "$TRAVIS_OS_NAME" = "linux" ]; then .ci/before_install_linux.sh; fi
+
 install: DOCKER_BUILDKIT=1 docker build --progress plain -t $DOCKERHUB_REPO:$COMMIT .
 script: 
   - docker run --rm -v "$PWD:$GECKO_HOME" $DOCKERHUB_REPO:$COMMIT bash "$GECKO_HOME/scripts/build_test.sh"
   - docker run --rm -v "$PWD:$GECKO_HOME" $DOCKERHUB_REPO:$COMMIT bash "$GECKO_HOME/scripts/build.sh"
-after_success: .ci/after_success.sh
+#Need to push to docker hub only from one build
+after_success: 
+ - if [ "$TRAVIS_OS_NAME" = "linux" ]; then .ci/after_success.sh; fi