Add ubuntu1804 Dockerfile

Author: shahmishal

swift-ci/master/ubuntu/18.04/Dockerfile

@@ -0,0 +1,36 @@
+FROM ubuntu:18.04
+
+RUN groupadd -g 998 build-user && \
+    useradd -m -r -u 998 -g build-user build-user
+
+ENV DEBIAN_FRONTEND="noninteractive"
+
+RUN apt -y update && apt -y install \
+  build-essential       \
+  clang                 \
+  cmake                 \
+  git                   \
+  icu-devtools          \
+  libcurl4-openssl-dev  \
+  libedit-dev           \
+  libicu-dev            \
+  libncurses5-dev       \
+  libpython3-dev        \
+  libsqlite3-dev        \
+  libxml2-dev           \
+  ninja-build           \
+  pkg-config            \
+  python                \
+  python-six            \
+  python3-six           \
+  python3-distutils     \
+  rsync                 \
+  swig                  \
+  systemtap-sdt-dev     \
+  tzdata                \
+  unzip                 \
+  uuid-dev
+
+USER build-user
+
+WORKDIR /home/build-user