Jenkinsfile set CI env variable in docker builds

Jenkinsfile

@@ -5,7 +5,7 @@ pipeline {
       agent {
         docker {
           image 'px4io/px4-dev-base:2017-10-23'
-          args '--env CI=true'
+          args '-e CI=true'
         }
       }
       steps {
@@ -26,7 +26,7 @@ pipeline {
             builds["${node_name}"] = {
               node {
                 stage("Build Test ${node_name}") {
-                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -49,7 +49,7 @@ pipeline {
           builds["px4fmu-v2"] = {
             node {
               stage("Build Test ${node_name}") {
-                docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                   stage("${node_name}") {
                     checkout scm
                     sh "make clean"
@@ -77,7 +77,7 @@ pipeline {
             builds["${node_name}"] = {
               node {
                 stage("Build Test ${node_name}") {
-                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -102,7 +102,7 @@ pipeline {
             builds["${node_name}"] = {
               node {
                 stage("Build Test ${node_name}") {
-                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-nuttx:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -125,7 +125,7 @@ pipeline {
             builds["${node_name}"] = {
               node {
                 stage("Build Test ${node_name}") {
-                  docker.image('px4io/px4-dev-raspi:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-raspi:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -147,7 +147,7 @@ pipeline {
             builds["${node_name}"] = {
               node {
                 stage("Build Test ${node_name}") {
-                  docker.image('px4io/px4-dev-armhf:2017-10-23').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-armhf:2017-10-23').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -193,7 +193,7 @@ pipeline {
             builds["${node_name} (GCC7)"] = {
               node {
                 stage("Build Test ${node_name} (GCC7)") {
-                  docker.image('px4io/px4-dev-base-archlinux:2017-12-08').inside('-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
+                  docker.image('px4io/px4-dev-base-archlinux:2017-12-08').inside('-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw') {
                     stage("${node_name}") {
                       checkout scm
                       sh "make clean"
@@ -220,7 +220,7 @@ pipeline {
         //  agent {
         //    docker {
         //      image 'px4io/px4-dev-clang:2017-10-23'
-        //      args '-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
+        //      args '-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
         //    }
         //  }
         //  steps {
@@ -233,7 +233,7 @@ pipeline {
           agent {
             docker {
               image 'px4io/px4-dev-base:2017-10-23'
-              args '-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
+              args '-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
             }
           }
           steps {
@@ -248,7 +248,7 @@ pipeline {
         //  agent {
         //    docker {
         //      image 'px4io/px4-dev-base:2017-10-23'
-        //      args '-e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
+        //      args '-e CI=true -e CCACHE_BASEDIR=$WORKSPACE -e CCACHE_DIR=/tmp/ccache -v /tmp/ccache:/tmp/ccache:rw'
         //    }
         //  }
         //  steps {