add docker compilation to travis (#3433)

* add docker compilation to travis

add new matrix entry in .travis.yml for compiling on 18.04
add Dockerfile in .ci to build ubuntu 18.04 inside docker
remove release entry for uvuntu 16.04 to not conflict
refactor .travis.yml
refactor travis-comile.sh
merge travis-dependencies.sh into the travis.yml
remove travis-dependencies.sh

* enable debugging on travis-compile.sh

* set ubuntu16 buildtype to "Debug"

set buildtype Debug for as requirement for "test"
add --debug and --release flags to travis-compile.sh

* make output prettier

edit the format warning message and clangify.sh output

* fix clangify.sh

fix --cf-version flag
fix directory argument parsing
add directory parsing details to --help
add examples to --help

.travis.yml

@@ -4,50 +4,65 @@ cache: ccache
 
 matrix:
   include:
-  #Ubuntu
-  - name: Ubuntu (Debug)
+  #Ubuntu Bionic (on docker)
+  - name: Ubuntu Bionic (Debug)
+    if: tag IS NOT present
+    services: docker
+    before_install: docker build -t img .ci
+    script: docker run --mount "type=bind,source=$(pwd),target=/src" -w="/src" img
+          bash .ci/travis-compile.sh --server --debug
+  - name: Ubuntu Bionic (Release)
+    if: (branch = master AND NOT type = pull_request) OR tag IS present
+    services: docker
+    script: docker build -t img .ci &&
+        docker run --mount "type=bind,source=$(pwd),target=/src" -w="/src" img
+          bash .ci/travis-compile.sh --server --package --release
+
+  #Ubuntu Xenial (Debug only)
+  - name: Ubuntu Xenial (Debug)
     if: tag IS NOT present
     os: linux
     dist: xenial
     group: stable
-    env: BUILDTYPE=Debug
-  - name: Ubuntu (Release)
-    if: (branch = master AND NOT type = pull_request) OR tag IS present
-    os: linux
-    dist: xenial
-    group: stable
-    env: BUILDTYPE=Release
+    addons:
+      apt:
+        packages:
+        - libprotobuf-dev
+        - protobuf-compiler
+        - qt5-default
+        - qttools5-dev
+        - qttools5-dev-tools
+        - qtmultimedia5-dev
+        - libqt5multimedia5-plugins
+        - libqt5svg5-dev
+        - libqt5sql5-mysql
+        - libqt5websockets5-dev
+    script: bash ./.ci/travis-compile.sh --format --server --test --debug
+
   #macOS
   - name: macOS (Debug)
-    if: tag IS NOT present
     os: osx
     osx_image: xcode8
-    env: BUILDTYPE=Debug
+    before_install:
+      - brew update
+      - brew update
+      - brew install ccache
+      - brew unlink python # protobuf python2 install requires this link to be removed
+      - brew install protobuf
+      - brew install qt
+    script: bash ./.ci/travis-compile.sh --server --install --debug
   - name: macOS (Release)
     if: (branch = master AND NOT type = pull_request) OR tag IS present
     os: osx
     osx_image: xcode8
-    env: BUILDTYPE=Release
-
-#install dependencies for container-based "linux" builds
-addons:
-  apt:
-    packages:
-    - libprotobuf-dev
-    - protobuf-compiler
-    - qt5-default
-    - qttools5-dev
-    - qttools5-dev-tools
-    - qtmultimedia5-dev
-    - libqt5multimedia5-plugins
-    - libqt5svg5-dev
-    - libqt5sql5-mysql
-    - libqt5websockets5-dev
-
-
-before_install: bash ./.ci/travis-dependencies.sh
-
-script: bash ./.ci/travis-compile.sh
+    before_install:
+      - brew update
+      - brew update
+      - brew install ccache
+      - brew unlink python # protobuf python2 install requires this link to be removed
+      - brew install protobuf
+      - brew install qt
+    script: bash ./.ci/travis-compile.sh --server --package --release
 
 
 # Builds for pull requests skip the deployment step altogether