Remove some unused dependencies (#3537)

toolset/setup/docker/languages/lua.dockerfile

@@ -1,25 +0,0 @@
-FROM techempower/base:0.1
-
-ENV LUA_VERSION="5.1"
-ENV LUA_MICRO="5"
-
-RUN apt install -yqq libreadline-dev lib32ncurses5-dev
-
-RUN wget https://github.com/LuaDist/lua/archive/$LUA_VERSION.$LUA_MICRO.tar.gz
-RUN tar xf $LUA_VERSION.$LUA_MICRO.tar.gz
-
-ENV LUA_HOME=/lua-$LUA_VERSION.$LUA_MICRO
-
-RUN cd $LUA_HOME && \
-    cp src/luaconf.h.orig src/luaconf.h && \
-    make linux && \
-    cd src && \
-    mkdir ../bin ../include ../lib && \
-    install -p -m 0755 lua luac ../bin && \
-    install -p -m 0644 lua.h luaconf.h lualib.h lauxlib.h ../include && \
-    install -p -m 0644 liblua.a ../lib
-
-ENV LUA=/lua${LUA_VERSION}.${LUA_MICRO}
-ENV PATH=${LUA_HOME}/bin:${PATH}
-ENV LUA_PATH="./?.lua;./?.lc;$LUA_HOME/share/lua/5.1/?/init.lua;$LUA_HOME/share/lua/5.1/?.lua;$LUA_HOME/lib/lua/5.1/?/init.lua;$LUA_HOME/lib/lua/5.1/?.lua"
-ENV LUA_CPATH="./?.lua;./?.lc;$LUA_HOME/share/lua/5.1/?/init.so;$LUA_HOME/share/lua/5.1/?.so;$LUA_HOME/lib/lua/5.1/?/init.so;$LUA_HOME/lib/lua/5.1/?.so"

toolset/setup/docker/systools/sbt.dockerfile

@@ -1,7 +0,0 @@
-FROM techempower/java8:0.1
-
-RUN mkdir /sbt
-WORKDIR /sbt
-RUN curl -sL https://github.com/sbt/sbt/releases/download/v1.1.2/sbt-1.1.2.tgz | tar xz
-ENV SBT_HOME /sbt/sbt
-ENV PATH ${SBT_HOME}/bin:${PATH}

toolset/setup/docker/webservers/h2o.dockerfile

@@ -1,22 +0,0 @@
-FROM techempower/ruby-2.4:0.1
-
-ENV H2O_HOME=/h2o
-ENV VERSION="2.2.4"
-ENV ARCHIVE=v${VERSION}.tar.gz
-ENV BUILD_DIR=h2o-${VERSION}
-
-RUN mkdir /h2o
-
-WORKDIR /h2o
-
-RUN wget -q https://github.com/h2o/h2o/archive/$ARCHIVE
-RUN tar xf $ARCHIVE
-
-WORKDIR /h2o/h2o-2.2.4
-
-RUN apt install -yqq cmake
-RUN cmake -DCMAKE_INSTALL_PREFIX="$H2O_HOME" -DCMAKE_C_FLAGS="-flto -march=native" \
-      -DCMAKE_AR=/usr/bin/gcc-ar -DCMAKE_RANLIB=/usr/bin/gcc-ranlib -DWITH_MRUBY=on
-RUN make -j "$(nproc)" install
-
-ENV PATH=/h2o/bin:${PATH}