As many RUN squashed as possible.

Image size down to 1.15GB, 14 layers.
Files and scripts move to a docker root fs instead of copied.
Debian slim 9.8.
Updated to Docker best practices.

Signed-off-by: Anderson Santiago <SantiagoGitlab@gmail.com>

docker/rootfs/usr/local/bin/entrypoint.sh

@@ -0,0 +1,120 @@
+#!/bin/sh
+
+set -e
+echo "mayan: starting entrypoint.sh"
+INSTALL_FLAG=/var/lib/mayan/system/SECRET_KEY
+CONCURRENCY_ARGUMENT=--concurrency=
+
+export MAYAN_DEFAULT_BROKER_URL=redis://127.0.0.1:6379/0
+export MAYAN_DEFAULT_CELERY_RESULT_BACKEND=redis://127.0.0.1:6379/0
+
+export MAYAN_ALLOWED_HOSTS='["*"]'
+export MAYAN_BIN=/opt/mayan-edms/bin/mayan-edms.py
+export MAYAN_BROKER_URL=${MAYAN_BROKER_URL:-${MAYAN_DEFAULT_BROKER_URL}}
+export MAYAN_CELERY_RESULT_BACKEND=${MAYAN_CELERY_RESULT_BACKEND:-${MAYAN_DEFAULT_CELERY_RESULT_BACKEND}}
+export MAYAN_INSTALL_DIR=/opt/mayan-edms
+export MAYAN_PYTHON_BIN_DIR=/opt/mayan-edms/bin/
+export MAYAN_MEDIA_ROOT=/var/lib/mayan
+export MAYAN_SETTINGS_MODULE=${MAYAN_SETTINGS_MODULE:-mayan.settings.production}
+
+export MAYAN_GUNICORN_BIN=${MAYAN_PYTHON_BIN_DIR}gunicorn
+export MAYAN_GUNICORN_WORKERS=${MAYAN_GUNICORN_WORKERS:-2}
+export MAYAN_PIP_BIN=${MAYAN_PYTHON_BIN_DIR}pip
+export MAYAN_STATIC_ROOT=${MAYAN_INSTALL_DIR}/static
+
+MAYAN_WORKER_FAST_CONCURRENCY=${MAYAN_WORKER_FAST_CONCURRENCY:-1}
+MAYAN_WORKER_MEDIUM_CONCURRENCY=${MAYAN_WORKER_MEDIUM_CONCURRENCY:-1}
+MAYAN_WORKER_SLOW_CONCURRENCY=${MAYAN_WORKER_SLOW_CONCURRENCY:-1}
+
+if [ "$MAYAN_WORKER_FAST_CONCURRENCY" -eq 0 ]; then
+    MAYAN_WORKER_FAST_CONCURRENCY=
+else
+    MAYAN_WORKER_FAST_CONCURRENCY="${CONCURRENCY_ARGUMENT}${MAYAN_WORKER_FAST_CONCURRENCY}"
+fi
+export MAYAN_WORKER_FAST_CONCURRENCY
+
+if [ "$MAYAN_WORKER_MEDIUM_CONCURRENCY" -eq 0 ]; then
+    MAYAN_WORKER_MEDIUM_CONCURRENCY=
+else
+    MAYAN_WORKER_MEDIUM_CONCURRENCY="${CONCURRENCY_ARGUMENT}${MAYAN_WORKER_MEDIUM_CONCURRENCY}"
+fi
+export MAYAN_WORKER_MEDIUM_CONCURRENCY
+
+if [ "$MAYAN_WORKER_SLOW_CONCURRENCY" -eq 0 ]; then
+    MAYAN_WORKER_SLOW_CONCURRENCY=
+else
+    MAYAN_WORKER_SLOW_CONCURRENCY="${CONCURRENCY_ARGUMENT}${MAYAN_WORKER_SLOW_CONCURRENCY}"
+fi
+export MAYAN_WORKER_SLOW_CONCURRENCY
+
+export CELERY_ALWAYS_EAGER=False
+export PYTHONPATH=$PYTHONPATH:$MAYAN_MEDIA_ROOT
+
+chown mayan:mayan /var/lib/mayan -R
+
+apt_get_install() {
+    apt-get -q update
+    apt-get install -y --force-yes --no-install-recommends --auto-remove "$@"
+    apt-get -q clean
+    rm -rf /var/lib/apt/lists/*
+}
+
+initialize() {
+    echo "mayan: initialize()"
+    su mayan -c "${MAYAN_BIN} initialsetup --force --no-javascript"
+}
+
+os_package_installs() {
+    echo "mayan: os_package_installs()"
+    if [ "${MAYAN_APT_INSTALLS}" ]; then
+        DEBIAN_FRONTEND=noninteractive apt_get_install $MAYAN_APT_INSTALLS
+    fi
+}
+
+pip_installs() {
+    echo "mayan: pip_installs()"
+    if [ "${MAYAN_PIP_INSTALLS}" ]; then
+        su mayan -c "${MAYAN_PIP_BIN} install $MAYAN_PIP_INSTALLS"
+    fi
+}
+
+start() {
+    echo "mayan: start()"
+    rm -rf /var/run/supervisor.sock
+    exec /usr/bin/supervisord -nc /etc/supervisor/supervisord.conf
+}
+
+upgrade() {
+    echo "mayan: upgrade()"
+    su mayan -c "${MAYAN_BIN} performupgrade --no-javascript"
+}
+
+os_package_installs || true
+pip_installs || true
+
+case "$1" in
+
+mayan) # Check if this is a new install, otherwise try to upgrade the existing
+       # installation on subsequent starts
+       if [ ! -f $INSTALL_FLAG ]; then
+           initialize
+       else
+           upgrade
+       fi
+       start
+       ;;
+
+run-tests) # Check if this is a new install, otherwise try to upgrade the existing
+           # installation on subsequent starts
+           if [ ! -f $INSTALL_FLAG ]; then
+               initialize
+           else
+               upgrade
+           fi
+           run-tests.sh
+           ;;
+
+*) su mayan -c "$@";
+   ;;
+
+esac