setup files

python-docker.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Filename: /usr/local/bin/python-docker
+# Script to run python:latest inside an ephemeral docker container
+# pip install python modules if requirements.txt is preset
+
+# do not continue script on errors
+set -euo pipefail
+
+# Python version to run from docker hub
+X_PYTHON_VERSION="latest"
+
+# Get current user details so we can run python with this user id later
+X_UID=$(id -u)
+X_USERNAME=$(id -un)
+
+# Set docker container name to basename of current working dir + random string
+NAME=$(echo $(basename "${PWD}" ).${RANDOM})
+
+# Create temporary docker ENTRYPOINT shell script
+X_TMPDIR="$(mktemp -d)"
+ENTRYPOINT="${X_TMPDIR}/entrypoint.sh"
+# Remove temp files on exit
+trap "{ rm -rf ${X_TMPDIR}; }" EXIT
+
+cat > "${ENTRYPOINT}" <<EOF
+#!/bin/bash
+
+# Alternate entrypoint for python docker image
+# Run pip as root, then run python as X_USERNAME
+
+# do not continue script on errors
+set -euo pipefail
+
+# Optimize pip for docker usage
+export ENV PIP_DISABLE_PIP_VERSION_CHECK=1
+export ENV PIP_NO_CACHE_DIR=1
+
+# create the current user in the container
+useradd -u ${X_UID} -U -s /bin/bash -M ${X_USERNAME}
+
+# pip install modules if requirements.txt is present
+[ -f requirements.txt ] && pip install -r requirements.txt
+
+# run python
+exec su -c "python $@" ${X_USERNAME}
+EOF
+
+chmod 755 ${ENTRYPOINT}
+
+# Run python in docker with all the containers set
+
+docker run -it --rm \
+	-v /etc/timezone:/etc/timezone:ro \
+	-v /etc/localtime:/etc/localtime:ro \
+	-v /data:/data -v /home:/home \
+	-v ${X_TMPDIR}:${X_TMPDIR} \
+	-w $(pwd) \
+	--entrypoint "${ENTRYPOINT}" \
+	--name ${NAME} \
+	--net=host \
+	python:X_PYTHON_VERSION "$@"
+