Add `--enable-shared`, slightly smaller images, and slightly better consistency across Dockerfiles

2.7/Dockerfile

@@ -1,9 +1,7 @@
-FROM buildpack-deps
-
-RUN apt-get update && apt-get install -y curl procps
+FROM buildpack-deps:jessie
 
 # remove several traces of debian python
-RUN apt-get purge -y python python-minimal python2.7-minimal
+RUN apt-get purge -y python.*
 
 # http://bugs.python.org/issue19846
 # > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
@@ -11,18 +9,23 @@ ENV LANG C.UTF-8
 
 ENV PYTHON_VERSION 2.7.8
 
-RUN mkdir -p /usr/src/python \
+RUN set -x \
+	&& mkdir -p /usr/src/python \
 	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" \
 		| tar -xJC /usr/src/python --strip-components=1 \
 	&& cd /usr/src/python \
-	&& ./configure \
+	&& ./configure --enable-shared \
 	&& make -j$(nproc) \
 	&& make install \
-	&& cd / \
+	&& ldconfig \
+	&& curl -SL 'https://bootstrap.pypa.io/get-pip.py' | python2 \
+	&& find /usr/local \
+		\( -type d -a -name test -o -name tests \) \
+		-o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
+		-exec rm -rf '{}' + \
 	&& rm -rf /usr/src/python
 
-# install "pip" and "virtualenv", since the vast majority of users of this image will want it
-RUN curl -SL 'https://bootstrap.pypa.io/get-pip.py' | python2
+# install "virtualenv", since the vast majority of users of this image will want it
 RUN pip install virtualenv
 
 CMD ["python2"]

3.3/Dockerfile

@@ -1,9 +1,7 @@
-FROM buildpack-deps
-
-RUN apt-get update && apt-get install -y curl procps
+FROM buildpack-deps:jessie
 
 # remove several traces of debian python
-RUN apt-get purge -y python python-minimal python2.7-minimal
+RUN apt-get purge -y python.*
 
 # http://bugs.python.org/issue19846
 # > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
@@ -11,24 +9,27 @@ ENV LANG C.UTF-8
 
 ENV PYTHON_VERSION 3.3.6
 
-RUN mkdir -p /usr/src/python \
+RUN set -x \
+	&& mkdir -p /usr/src/python \
 	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" \
 		| tar -xJC /usr/src/python --strip-components=1 \
 	&& cd /usr/src/python \
-	&& ./configure \
+	&& ./configure --enable-shared \
 	&& make -j$(nproc) \
 	&& make install \
-	&& cd / \
+	&& ldconfig \
+	&& curl -SL 'https://bootstrap.pypa.io/get-pip.py' | python3 \
+	&& find /usr/local \
+		\( -type d -a -name test -o -name tests \) \
+		-o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
+		-exec rm -rf '{}' + \
 	&& rm -rf /usr/src/python
 
 # make some useful symlinks that are expected to exist
 RUN cd /usr/local/bin \
-	&& ln -s easy_install-3.4 easy_install \
 	&& ln -s idle3 idle \
 	&& ln -s pydoc3 pydoc \
 	&& ln -s python3 python \
 	&& ln -s python-config3 python-config
 
-RUN curl -SL 'https://bootstrap.pypa.io/get-pip.py' | python3
-
 CMD ["python3"]

3.4/Dockerfile

@@ -1,9 +1,7 @@
-FROM buildpack-deps
-
-RUN apt-get update && apt-get install -y curl procps
+FROM buildpack-deps:jessie
 
 # remove several traces of debian python
-RUN apt-get purge -y python python-minimal python2.7-minimal
+RUN apt-get purge -y python.*
 
 # http://bugs.python.org/issue19846
 # > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
@@ -11,14 +9,19 @@ ENV LANG C.UTF-8
 
 ENV PYTHON_VERSION 3.4.2
 
-RUN mkdir -p /usr/src/python \
+RUN set -x \
+	&& mkdir -p /usr/src/python \
 	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" \
 		| tar -xJC /usr/src/python --strip-components=1 \
 	&& cd /usr/src/python \
-	&& ./configure \
+	&& ./configure --enable-shared \
 	&& make -j$(nproc) \
 	&& make install \
-	&& cd / \
+	&& ldconfig \
+	&& find /usr/local \
+		\( -type d -a -name test -o -name tests \) \
+		-o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
+		-exec rm -rf '{}' + \
 	&& rm -rf /usr/src/python
 
 # make some useful symlinks that are expected to exist