travis: Don't duplicate Docker invocation

All variable parts are taken from the environment, so we
can exploit inheritance and avoid duplication. This will
become more important as we start building on additional
platforms.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

.travis.yml

@@ -12,31 +12,11 @@ matrix:
       env:
         - IMAGE=ubuntu:18.04
         - DISTCHECK_CONFIGURE_FLAGS="--with-init-script=systemd"
-      script:
-        - docker run
-            --privileged
-            -v $(pwd):/build
-            -w /build
-            -e VIR_TEST_DEBUG="$VIR_TEST_DEBUG"
-            -e PACKAGES="$PACKAGES"
-            -e DISTCHECK_CONFIGURE_FLAGS="$DISTCHECK_CONFIGURE_FLAGS"
-            "$IMAGE"
-            /bin/sh -xc "$DOCKER_CMD"
     - services:
         - docker
       env:
         - IMAGE=ubuntu:16.04
         - DISTCHECK_CONFIGURE_FLAGS="--with-init-script=upstart"
-      script:
-        - docker run
-            --privileged
-            -v $(pwd):/build
-            -w /build
-            -e VIR_TEST_DEBUG="$VIR_TEST_DEBUG"
-            -e PACKAGES="$PACKAGES"
-            -e DISTCHECK_CONFIGURE_FLAGS="$DISTCHECK_CONFIGURE_FLAGS"
-            "$IMAGE"
-            /bin/sh -xc "$DOCKER_CMD"
     - compiler: clang
       language: c
       os: osx
@@ -57,6 +37,17 @@ matrix:
         - find -name test-suite.log | xargs cat
         - echo '=== LOG FILE(S) END ==='
 
+script:
+  - docker run
+      --privileged
+      -v $(pwd):/build
+      -w /build
+      -e VIR_TEST_DEBUG="$VIR_TEST_DEBUG"
+      -e PACKAGES="$PACKAGES"
+      -e DISTCHECK_CONFIGURE_FLAGS="$DISTCHECK_CONFIGURE_FLAGS"
+      "$IMAGE"
+      /bin/sh -xc "$DOCKER_CMD"
+
 git:
   submodules: true