Initial commit.

Dockerfile.2021-05-05

@@ -0,0 +1,33 @@
+# Linux build environment for CI
+
+FROM ubuntu:focal
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends  \
+      build-essential                           \
+      ca-certificates                           \
+      git                                       \
+      python3                                   \
+      wget                                      \
+      clang-format                              \
+      clang                                     \
+      cmake                                     \
+      llvm-dev                                  \
+      libc++-dev                                \
+      libc++abi-dev                             \
+      libgtk-3-dev                              \
+      liblz4-dev                                \
+      libpthread-stubs0-dev                     \
+      libsdl2-dev                               \
+      libvulkan-dev                             \
+      libx11-dev                                \
+      libx11-xcb-dev                            \
+    ; \
+    rm -rf /var/lib/apt/lists/*
+
+ENV CC clang
+ENV CXX clang++
+ENV AR llvm-ar