chore(elixir): clone the repo only one time

Install each version on a separate release folder.

Dockerfile

@@ -200,11 +200,7 @@ RUN mkdir -p ${HOME}/.local/src \
 # mix do deps.get, deps.compile
 # MIX_ENV=prod mix compile
 # MIX_ENV=prod mix elixir_ls.release
-RUN git clone https://github.com/elixir-lsp/elixir-ls.git ${LOCAL_SRC_HOME}/elixir-ls/v0.12.0 \
+RUN git clone https://github.com/elixir-lsp/elixir-ls.git ${LOCAL_SRC_HOME}/elixir-ls
-  && cd ${LOCAL_SRC_HOME}/elixir-ls/v0.12.0 \
+
-  && git checkout tags/v0.12.0 \
+COPY ./scripts/docker-entrypoint.sh /usr/local/bin/docker-entrypoint
-  && cp .release-tool-versions .tool-versions \
+COPY ./scripts/elixir-ls-setup.sh /usr/local/bin/elixir-ls-setup
-  && git clone https://github.com/elixir-lsp/elixir-ls.git ${LOCAL_SRC_HOME}/elixir-ls/v0.14.6 \
-  && cd ${LOCAL_SRC_HOME}/elixir-ls/v0.14.6 \
-  && git checkout tags/v0.14.6 \
-  && cp .release-tool-versions .tool-versions

scripts/docker-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+# NOTE (jpd): setup elixir-ls for older versions of elixir
+if [ ! -d ${LOCAL_SRC_HOME}/elixir-ls/release ]; then
+	echo "setup elixir ls version 0.12.0"
+	/usr/local/bin/elixir-ls-setup v0.12.0
+	echo "setup elixir ls version 0.14.6"
+	/usr/local/bin/elixir-ls-setup v0.14.6
+fi
+
+exec "$@"

scripts/elixir-ls-setup.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -e
+
+function setup() {
+	local elixir_ls_home=${LOCAL_SRC_HOME}/elixir-ls
+	local elixir_ls_release=${elixir_ls_home}/release
+	echo "elixir-ls repo"
+	cd ${elixir_ls_home}
+	echo "checkout versions ${1}"
+	git checkout tags/${1}
+	echo "set erlang/elixir versions"
+	cp .release-tool-versions .tool-versions
+	echo "using erlang $(rtx current erlang) / elixir $(rtx current elixir)"
+	echo "install erlang/elixir runtimes"
+	KERL_CONFIGURE_OPTIONS="-with-ssl=${HOME}/.local/lib/ssl" rtx install
+	echo "install elixir-ls deps"
+	mix do local.rebar --force, local.hex --force, deps.get, deps.compile
+	echo "compile and release elixir-ls"
+	MIX_ENV=prod mix compile
+	MIX_ENV=prod mix elixir_ls.release -o ${elixir_ls_release}/${1}
+	echo "remove local .tool-versions"
+	cp .tool-versions ${elixir_ls_release}/${1}
+	rm .tool-versions
+	mix do deps.clean --all, clean
+	git checkout master
+}
+
+setup $1