Update/fix PHPIZE_DEPS comment

Closes #597

Author: tianon

5.6/alpine3.4/cli/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \

5.6/alpine3.4/fpm/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \

5.6/alpine3.4/zts/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \

5.6/jessie/apache/Dockerfile

@@ -15,7 +15,8 @@ RUN set -eux; \
 		echo 'Pin-Priority: -1'; \
 	} > /etc/apt/preferences.d/no-debian-php
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# (see persistent deps below)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev \
@@ -26,6 +27,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkg-config \
 		re2c
+
+# persistent / runtime deps
 RUN apt-get update && apt-get install -y \
 		$PHPIZE_DEPS \
 		ca-certificates \

5.6/jessie/cli/Dockerfile

@@ -15,7 +15,8 @@ RUN set -eux; \
 		echo 'Pin-Priority: -1'; \
 	} > /etc/apt/preferences.d/no-debian-php
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# (see persistent deps below)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev \
@@ -26,6 +27,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkg-config \
 		re2c
+
+# persistent / runtime deps
 RUN apt-get update && apt-get install -y \
 		$PHPIZE_DEPS \
 		ca-certificates \

5.6/jessie/fpm/Dockerfile

@@ -15,7 +15,8 @@ RUN set -eux; \
 		echo 'Pin-Priority: -1'; \
 	} > /etc/apt/preferences.d/no-debian-php
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# (see persistent deps below)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev \
@@ -26,6 +27,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkg-config \
 		re2c
+
+# persistent / runtime deps
 RUN apt-get update && apt-get install -y \
 		$PHPIZE_DEPS \
 		ca-certificates \

5.6/jessie/zts/Dockerfile

@@ -15,7 +15,8 @@ RUN set -eux; \
 		echo 'Pin-Priority: -1'; \
 	} > /etc/apt/preferences.d/no-debian-php
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# (see persistent deps below)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev \
@@ -26,6 +27,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkg-config \
 		re2c
+
+# persistent / runtime deps
 RUN apt-get update && apt-get install -y \
 		$PHPIZE_DEPS \
 		ca-certificates \

7.0/alpine3.4/cli/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \

7.0/alpine3.4/fpm/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \

7.0/alpine3.4/zts/Dockerfile

@@ -6,7 +6,8 @@
 
 FROM alpine:3.4
 
-# persistent / runtime deps
+# dependencies required for running "phpize"
+# these get automatically installed and removed by "docker-php-ext-*" (unless they're already installed)
 ENV PHPIZE_DEPS \
 		autoconf \
 		dpkg-dev dpkg \
@@ -17,6 +18,8 @@ ENV PHPIZE_DEPS \
 		make \
 		pkgconf \
 		re2c
+
+# persistent / runtime deps
 RUN apk add --no-cache --virtual .persistent-deps \
 		ca-certificates \
 		curl \