Alpine: Add libs for nis module (Alpine 3.7/Python 3.7 only)

* Bump Python 3.7 to 3.7.0b2

Author: JayH5

3.7-rc/alpine3.7/Dockerfile

@@ -18,7 +18,7 @@ ENV LANG C.UTF-8
 RUN apk add --no-cache ca-certificates
 
 ENV GPG_KEY 0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
-ENV PYTHON_VERSION 3.7.0b1
+ENV PYTHON_VERSION 3.7.0b2
 
 RUN set -ex \
 	&& apk add --no-cache --virtual .fetch-deps \
@@ -46,6 +46,8 @@ RUN set -ex \
 		gdbm-dev \
 		libc-dev \
 		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
 		linux-headers \
 		make \
 		ncurses-dev \

3.7-rc/stretch/Dockerfile

@@ -20,7 +20,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
-ENV PYTHON_VERSION 3.7.0b1
+ENV PYTHON_VERSION 3.7.0b2
 
 RUN set -ex \
 	&& buildDeps=' \

3.7-rc/stretch/slim/Dockerfile

@@ -25,7 +25,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
-ENV PYTHON_VERSION 3.7.0b1
+ENV PYTHON_VERSION 3.7.0b2
 
 RUN set -ex \
 	&& buildDeps=" \

3.7-rc/windows/windowsservercore-1709/Dockerfile

@@ -8,7 +8,7 @@ FROM microsoft/windowsservercore:1709
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
-ENV PYTHON_VERSION 3.7.0b1
+ENV PYTHON_VERSION 3.7.0b2
 ENV PYTHON_RELEASE 3.7.0
 
 RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f $env:PYTHON_RELEASE, $env:PYTHON_VERSION); \

3.7-rc/windows/windowsservercore-ltsc2016/Dockerfile

@@ -8,7 +8,7 @@ FROM microsoft/windowsservercore:ltsc2016
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
-ENV PYTHON_VERSION 3.7.0b1
+ENV PYTHON_VERSION 3.7.0b2
 ENV PYTHON_RELEASE 3.7.0
 
 RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f $env:PYTHON_RELEASE, $env:PYTHON_VERSION); \

Dockerfile-alpine.template

@@ -40,6 +40,8 @@ RUN set -ex \
 		gdbm-dev \
 		libc-dev \
 		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
 		linux-headers \
 		make \
 		ncurses-dev \

update.sh

@@ -158,6 +158,13 @@ for version in "${versions[@]}"; do
 			sed -ri -e 's/libressl/openssl/g' "$dir/Dockerfile"
 		fi
 
+		# Libraries to build the nis module available in Alpine 3.7, but also require this patch:
+		# https://bugs.python.org/issue32521
+		# TODO: Remove Python version check once 2.7 and 3.6 have the patch
+		if [[ "$variant" == alpine* ]] && [[ "$variant" != alpine3.7 || "$version" != 3.7* ]]; then
+			sed -ri -e '/libnsl-dev/d' -e '/libtirpc-dev/d' "$dir/Dockerfile"
+		fi
+
 		case "$v" in
 			wheezy/slim|jessie/slim)
 				sed -ri \