manually building curl, cause we cant use the latest version...

.travis.yml

@@ -1,17 +1,26 @@
 dist: xenial
 
+env:
+  - DOCKER_COMPOSE_VERSION: 1.23.1
+
 addons:
   apt:
     packages:
-    - curl
-
-env:
-  - DOCKER_COMPOSE_VERSION: 1.23.1
+      - build-essential
+      - nghttp2
+      - libnghttp2-dev
+      - libssl-dev
 
 services:
   - docker
 
 before_install:
+  - wget https://curl.haxx.se/download/curl-7.63.0.tar.gz && tar xzf curl-7.63.0.tar.gz
+  - cd curl-7.63.0
+  - sudo apt-get -y remove curl
+  - ./configure --with-nghttp2 --with-ssl
+  - make && sudo make install
+  - sudo ldconfig && cd ..
   - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   - sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
   - sudo apt-get update

Dockerfile

@@ -7,7 +7,7 @@ LABEL author=frappé
 ENV LANG C.UTF-8
 
 # Install all neccesary packages
-RUN apt-get update && apt-get install -y --no-install-recommends build-essential cron curl git iputils-ping libffi-dev \
+RUN apt-get update && apt-get install -y --no-install-suggests --no-install-recommends build-essential cron curl git iputils-ping libffi-dev \
   liblcms2-dev libldap2-dev libmariadbclient-dev libsasl2-dev libssl-dev libtiff5-dev libwebp-dev mariadb-client \
   python-dev python-pip python-setuptools python-tk redis-tools rlwrap software-properties-common sudo tk8.6-dev \
   vim xfonts-75dpi xfonts-base wget wkhtmltopdf \