build libxil inside a Docker container

.gitlab-ci.yml

+variables:
+  GIT_STRATEGY: fetch
+  GIT_SUBMODULE_STRATEGY: recursive
+  DOCKER_TAG_DEV: ${CI_COMMIT_REF_NAME}
+  DOCKER_IMAGE_DEV: villas/libxil-dev
+
 stages:
   - prepare
   - build
 
+# Stage: prepare
+##############################################################################
+
+docker:
+  stage: prepare
+  script:
+    - docker build -t ${DOCKER_IMAGE_DEV}:${DOCKER_TAG_DEV} .
+  tags:
+    - shell
+    - linux
+
+# Stage: build
+##############################################################################
+
 build:
   stage: build
   script:
-    - mkdir -p build && cd build
+    - mkdir -p build
+    - cd build
     - cmake ..
     - make
+  image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG_DEV}
   tags:
-    - shell
\ No newline at end of file
+    - docker

Dockerfile

+FROM fedora:27
+
+LABEL \
+	org.label-schema.schema-version="1.0" \
+	org.label-schema.name="libxil" \
+	org.label-schema.vendor="Institute for Automation of Complex Power Systems, RWTH Aachen University" \
+	org.label-schema.author.name="Steffen Vogel" \
+	org.label-schema.author.email="stvogel@eonerc.rwth-aachen.de" \
+	org.label-schema.description="A image containing all build-time dependencies for libxil based on Fedora" \
+	org.label-schema.url="http://fein-aachen.org/projects/villas-framework/" \
+	org.label-schema.vcs-url="https://git.rwth-aachen.de/VILLASframework/libxil"
+
+# Toolchain
+RUN dnf -y install \
+	gcc \
+	make cmake
+
+ENTRYPOINT bash