Add Dockerfile for Ubuntu 18 Build-Environment

.gitlab-ci.yml

@@ -24,6 +24,9 @@ build-docker:
     - docker pull $CI_REGISTRY_IMAGE:16 || true
     - docker build --cache-from $CI_REGISTRY_IMAGE:16 -t $CI_REGISTRY_IMAGE:16 -f Dockerfile.16 .
     - docker push $CI_REGISTRY_IMAGE:16
+    - docker pull $CI_REGISTRY_IMAGE:18 || true
+    - docker build --cache-from $CI_REGISTRY_IMAGE:18 -t $CI_REGISTRY_IMAGE:18 -f Dockerfile.18 .
+    - docker push $CI_REGISTRY_IMAGE:18
     - docker pull $CI_REGISTRY_IMAGE:20 || true
     - docker build --cache-from $CI_REGISTRY_IMAGE:20 -t $CI_REGISTRY_IMAGE:20 -f Dockerfile.20 .
     - docker push $CI_REGISTRY_IMAGE:20

Dockerfile.18

+FROM ubuntu:18.04
+
+# Fix for apt-get errors "Hash sum missmatch"
+# See: https://github.com/jenkinsci/docker/issues/543#issuecomment-318356276
+RUN printf 'Acquire::http::Pipeline-Depth 0; \n\
+Acquire::http::No-Cache true; \n\
+Acquire::BrokenProxy    true;' > /etc/apt/apt.conf.d/99fixbadproxy
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+	build-essential \
+	ca-certificates \
+	chrpath \
+	cpio \
+	debianutils \
+	diffstat \
+	g++ \
+	gawk \
+	gcc \
+	gcc-multilib \
+	g++-multilib \
+	gdb-multiarch \
+	git-core \
+	iputils-ping \
+	libncurses5-dev \
+	libsdl1.2-dev \
+	libssl-dev \
+	locales \
+	nfs-common \
+	python \
+	python3 \
+	python3-pexpect \
+	python3-pip \
+	screen \
+	socat \
+	sudo \
+	texinfo \
+	unzip \
+	wget \
+	xz-utils \
+	vim-common
+
+RUN dpkg-reconfigure locales && \
+    locale-gen en_US.UTF-8  && \
+    update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
+
+RUN update-ca-certificates
+
+RUN adduser --disabled-password --gecos '' user && \
+    adduser user sudo && \
+    echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+USER user
+
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+COPY --chown=user:user . /yocto-ktn/
+WORKDIR /yocto-ktn/
+
+# Remove GitLab CI token from remote URL
+RUN git remote set-url origin $(git remote get-url origin | sed -E -e "s/(.*)(gitlab-ci-token:.*)@(.*)/\1\3/")
+
+CMD ["/bin/bash", "-c", "source init-env -o build"]