Merge pull request Vimjas#56 from blueyed/alpine38

Update to Alpine 3.8

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache upgrade
 

Makefile

@@ -1,6 +1,6 @@
 .PHONY: build push test
 
-TAG:=10
+TAG:=11
 
 build:
 	docker build -t testbed/vim:$(TAG) .

scripts/install_vim.sh

@@ -107,8 +107,8 @@ EOF
   if [ $LUA -eq 1 ]; then
     if [ "$FLAVOR" = vim ]; then
       CONFIG_ARGS="$CONFIG_ARGS --enable-luainterp"
-      apk add --virtual vim-build lua-dev
-      apk add lua
+      apk add --virtual vim-build lua5.3-dev
+      apk add lua5.3-libs
     else
       echo 'NOTE: -lua is automatically used with Neovim 0.2.1+, and not supported before.'
     fi
@@ -199,10 +199,19 @@ build() {
     make install || bail "Install failed"
 
   elif [ "$FLAVOR" = neovim ]; then
+    DEPS_CMAKE_FLAGS="-DUSE_BUNDLED=OFF"
+
+    # Use bundled unibilium with older releases that data directly, and not
+    # through unibi_var_from_num like it is required now.
+    if ! grep -qF 'unibi_var_from_num' src/nvim/tui/tui.c; then
+      DEPS_CMAKE_FLAGS="$DEPS_CMAKE_FLAGS -DUSE_BUNDLED_UNIBILIUM=ON"
+    fi
+
+    head_info=$(curl --retry 3 -SL "https://api.github.com/repos/$repo/git/refs/heads/$tag")
     make CMAKE_BUILD_TYPE=RelWithDebInfo \
       CMAKE_EXTRA_FLAGS="-DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX \
         -DENABLE_JEMALLOC=OFF" \
-      DEPS_CMAKE_FLAGS="-DUSE_BUNDLED=OFF" \
+      DEPS_CMAKE_FLAGS="$DEPS_CMAKE_FLAGS" \
         || bail "Make failed"
 
     versiondef_file=build/config/auto/versiondef.h