ci: Add an Android NDK Docker image

The Fedora image we use contains Android bits that ought to go into
their own Docker container. This avoids having a massive Docker image
that gloms everything and is harder to update.

We reuse the same Docker image we used for Fedora, to avoid regressing.

.gitlab-ci/android-ndk.Dockerfile

@@ -0,0 +1,75 @@
+FROM fedora:27
+
+RUN dnf -y install \
+    autoconf \
+    automake \
+    bindfs \
+    clang \
+    clang-analyzer \
+    desktop-file-utils \
+    elfutils-libelf-devel \
+    findutils \
+    fuse \
+    gamin-devel \
+    gcc \
+    gcc-c++ \
+    gettext \
+    git \
+    glibc-devel \
+    glibc-headers \
+    glibc-langpack-de \
+    glibc-langpack-el \
+    glibc-langpack-el \
+    glibc-langpack-en \
+    glibc-langpack-es \
+    glibc-langpack-es \
+    glibc-langpack-fa \
+    glibc-langpack-fr \
+    glibc-langpack-hr \
+    glibc-langpack-ja \
+    glibc-langpack-lt \
+    glibc-langpack-pl \
+    glibc-langpack-ru \
+    glibc-langpack-tr \
+    gtk-doc \
+    itstool \
+    lcov \
+    libattr-devel \
+    libffi-devel \
+    libmount-devel \
+    libselinux-devel \
+    libtool \
+    libxslt \
+    make \
+    ncurses-compat-libs \
+    ninja-build \
+    pcre-devel \
+    python3 \
+    python3-pip \
+    python3-wheel \
+    systemtap-sdt-devel \
+    unzip \
+    wget \
+    xz \
+    zlib-devel \
+ && dnf clean all
+
+WORKDIR /opt
+ENV ANDROID_NDK_PATH /opt/android-ndk
+COPY android-download-ndk.sh .
+RUN ./android-download-ndk.sh
+COPY android-setup-env.sh .
+RUN ./android-setup-env.sh arm64 21
+RUN ./android-setup-env.sh arm64 28
+RUN rm -rf $ANDROID_NDK_PATH
+
+RUN pip3 install meson==0.48.0
+
+ARG HOST_USER_ID=5555
+ENV HOST_USER_ID ${HOST_USER_ID}
+RUN useradd -u $HOST_USER_ID -ms /bin/bash user
+
+USER user
+WORKDIR /home/user
+
+ENV LANG C.UTF-8