Keep the source and instead just "make clean"

5.4/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 ##</autogenerated>##
 
@@ -16,12 +22,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -32,22 +35,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 CMD ["php", "-a"]

5.4/apache/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 RUN apt-get update && apt-get install -y apache2-bin apache2.2-common --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
@@ -29,12 +35,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -45,22 +48,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 WORKDIR /var/www/html

5.5/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 ##</autogenerated>##
 
@@ -16,12 +22,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -32,22 +35,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 CMD ["php", "-a"]

5.5/apache/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 RUN apt-get update && apt-get install -y apache2-bin apache2.2-common --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
@@ -29,12 +35,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -45,22 +48,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 WORKDIR /var/www/html

5.6/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 ##</autogenerated>##
 
@@ -16,12 +22,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -32,22 +35,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 CMD ["php", "-a"]

5.6/apache/Dockerfile

@@ -3,6 +3,12 @@ FROM debian:jessie
 # persistent / runtime deps
 RUN apt-get update && apt-get install -y ca-certificates curl libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
 
+# phpize deps
+RUN apt-get update && apt-get install -y autoconf pkg-config --no-install-recommends && rm -r /var/lib/apt/lists/*
+
+ENV PHP_INI_DIR /usr/local/etc/php
+RUN mkdir -p $PHP_INI_DIR/conf.d
+
 ##<autogenerated>##
 RUN apt-get update && apt-get install -y apache2-bin apache2.2-common --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
@@ -29,12 +35,9 @@ RUN buildDeps=" \
 		bzip2 \
 		file \
 		libcurl4-openssl-dev \
-		libpng12-dev \
 		libreadline6-dev \
 		libssl-dev \
 		libxml2-dev \
-		m4 \
-		pkg-config \
 	"; \
 	set -x \
 	&& apt-get update && apt-get install -y $buildDeps --no-install-recommends && rm -rf /var/lib/apt/lists/* \
@@ -45,22 +48,20 @@ RUN buildDeps=" \
 	&& tar -xf php.tar.bz2 -C /usr/src/php --strip-components=1 \
 	&& rm php.tar.bz2* \
 	&& cd /usr/src/php \
-	&& ./configure --disable-cgi \
+	&& ./configure \
+		--with-config-file-path="$PHP_INI_DIR" \
+		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
 		$PHP_EXTRA_CONFIGURE_ARGS \
-		--enable-soap \
+		--disable-cgi \
 		--with-curl \
-		--with-gd \
-		--with-mysql \
-		--with-mysqli \
 		--with-openssl \
-		--with-pdo-mysql \
 		--with-readline \
 		--with-zlib \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
 	&& apt-get purge -y --auto-remove $buildDeps \
-	&& rm -r /usr/src/php
+	&& make clean
 
 ##<autogenerated>##
 WORKDIR /var/www/html