feat(erlang): migrate erlang to v2 tools

src/usr/local/buildpack/tools/v2/elixir.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+function install_tool () {
+  local versioned_tool_path
+
+  check_command erl
+
+  versioned_tool_path=$(create_versioned_tool_path)
+  create_folder "${versioned_tool_path}/bin"
+
+  local file
+  file=$(get_from_url "https://github.com/elixir-lang/elixir/releases/download/v${TOOL_VERSION}/Precompiled.zip")
+  unzip -q "${file}" -d "${versioned_tool_path}"
+}
+
+function link_tool () {
+  local versioned_tool_path
+  versioned_tool_path=$(find_versioned_tool_path)
+
+  shell_wrapper "${TOOL_NAME}" "${versioned_tool_path}/bin"
+  shell_wrapper mix "${versioned_tool_path}/bin"
+
+  elixir --version
+  mix --version
+
+  if [[ $(is_root) -eq 0 ]]; then
+    su -c 'mix local.hex --force' "${USER_NAME}"
+    su -c 'mix local.rebar --force' "${USER_NAME}"
+  else
+    mix local.hex --force
+    mix local.rebar --force
+  fi
+}

src/usr/local/buildpack/tools/v2/erlang.sh

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+SEMVER_REGEX="^(0|[1-9][0-9]*)(\.(0|[1-9][0-9]*))?(\.(0|[1-9][0-9]*))?(\.(0|[1-9][0-9]*))?(\+[0-9]+)?([a-z-].*)?$"
+
+function check_semver () {
+  if [[ ! "${1}" =~ ${SEMVER_REGEX} ]]; then
+    echo Not a semver like version - aborting: "${1}"
+    exit 1
+  fi
+  export MAJOR=${BASH_REMATCH[1]}
+  export MINOR=${BASH_REMATCH[3]}
+  export PATCH=${BASH_REMATCH[5]}
+  export BUILD=${BASH_REMATCH[7]}
+}
+
+function check_tool_requirements () {
+  check_semver "${TOOL_VERSION}"
+  if [[ ! "${MAJOR}" || ! "${MINOR}" || ! "${PATCH}" || ! "${BUILD}" ]]; then
+    echo Invalid version: "${TOOL_VERSION}"
+    exit 1
+  fi
+}
+
+function prepare_tool() {
+  local version_codename
+
+  version_codename=$(get_distro)
+  case "$version_codename" in
+    "bionic") apt_install \
+      libodbc1 \
+      libssl1.1 \
+      libsctp1 \
+      ;;
+    "focal") apt_install \
+      libodbc1 \
+      libssl1.1 \
+      libsctp1 \
+      ;;
+  esac
+
+  local tool_path
+  tool_path=$(create_tool_path)
+
+  # workaround https://github.com/containerbase/buildpack/issues/377
+  ln -sf "$tool_path" /usr/local/erlang
+}
+
+function install_tool () {
+  local tool_path
+  local file
+  local BASE_URL
+  local ARCH
+  local version_codename
+
+  tool_path=$(find_tool_path)
+
+  if [[ ! -d "${tool_path}" ]]; then
+    if [[ $(is_root) -ne 0 ]]; then
+      echo "${TOOL_NAME} not prepared"
+      exit 1
+    fi
+    prepare_tool
+    tool_path=$(find_tool_path)
+  fi
+
+  ARCH=$(uname -p)
+  BASE_URL="https://github.com/containerbase/${TOOL_NAME}-prebuild/releases/download"
+  version_codename=$(get_distro)
+
+  file=$(get_from_url "${BASE_URL}/${TOOL_VERSION}/${TOOL_NAME}-${TOOL_VERSION}-${version_codename}-${ARCH}.tar.xz")
+  tar -C "${tool_path}" -xf "${file}"
+}
+
+function link_tool () {
+  local versioned_tool_path
+  versioned_tool_path=$(find_versioned_tool_path)
+
+  export_tool_env ERL_ROOTDIR "${versioned_tool_path}"
+  shell_wrapper erl "${versioned_tool_path}/bin"
+  erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell
+}

test/erlang/Dockerfile

@@ -1,25 +1,65 @@
 ARG IMAGE=containerbase/buildpack
-FROM ${IMAGE}
+FROM ${IMAGE} as build
 
-ARG APT_HTTP_PROXY
+RUN touch /.dummy
 
-# Erlang
+# test openshift compatibility 1000<>1001
+COPY --chown=1001:0 test test
+
+WORKDIR /test
+
+#--------------------------------------
+# test: erlang (root)
+#--------------------------------------
+FROM build as testa
+
+ARG APT_HTTP_PROXY
+ARG BUILDPACK_DEBUG
 
 # renovate: datasource=github-releases lookupName=containerbase/erlang-prebuild versioning=docker
 RUN install-tool erlang 24.3.3.0
 
-# Elixir
-
 # renovate: datasource=docker versioning=docker
 RUN install-tool elixir 1.13.4
 
-# test openshift compatibility 1000<>1001
-COPY --chown=1001:0 test test
 
-WORKDIR /test
+USER 1001
+
+RUN set -ex; \
+    cd a; \
+    mix deps.update --all;
+
+
+#--------------------------------------
+# test: erlang (user,openshift)
+#--------------------------------------
+FROM build as testb
+
+ARG APT_HTTP_PROXY
+ARG BUILDPACK_DEBUG
+
+RUN prepare-tool erlang
 
 USER 1001
 
+# renovate: datasource=github-releases lookupName=containerbase/erlang-prebuild versioning=docker
+RUN install-tool erlang 24.3.3.0
+
+ARG BUILDPACK_DEBUG
+
+# renovate: datasource=docker versioning=docker
+RUN install-tool elixir 1.13.4
+
+
 RUN set -ex; \
     cd a; \
     mix deps.update --all;
+
+
+#--------------------------------------
+# final
+#--------------------------------------
+FROM build
+
+COPY --from=testa /.dummy /.dummy
+COPY --from=testb /.dummy /.dummy