Disable Gradle daemon in Travis CI builds (#1004)

Disable Gradle daemon
Attempt to resolve gradle/gradle#3318

Author: rnorth

.travis.yml

@@ -7,24 +7,24 @@ services:
   - docker
 
 install:
-  - ./gradlew build -x check --scan
+  - ./gradlew build -x check --scan --no-daemon
 
 jobs:
   include:
     - stage: test
       env: [ NAME=core ]
-      script: ./gradlew testcontainers:check javadoc --scan
+      script: ./gradlew testcontainers:check javadoc --scan --no-daemon
 
     - stage: test
       env: [ NAME=core ]
       jdk: openjdk11
-      script: ./gradlew testcontainers:check --scan
+      script: ./gradlew testcontainers:check --scan --no-daemon
 
     - env: [ NAME=selenium ]
-      script: ./gradlew selenium:check --scan
+      script: ./gradlew selenium:check --scan --no-daemon
 
     - env: [ NAME=modules ]
-      script: ./gradlew check -x testcontainers:check -x selenium:check --scan
+      script: ./gradlew check -x testcontainers:check -x selenium:check --scan --no-daemon
 
     # Run Docker-in-Docker tests inside Alpine
     - env: [ NAME="docker-in-alpine-docker" ]
@@ -45,7 +45,7 @@ jobs:
       script: skip
       deploy:
         provider: script
-        script: ./gradlew -Pversion=$TRAVIS_TAG release --scan
+        script: ./gradlew -Pversion=$TRAVIS_TAG release --scan --no-daemon
         on:
           tags: true
           branch: master