Add Alpine 3.8 based images

python2.7-alpine3.8/Dockerfile

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+FROM tiangolo/uwsgi-nginx:python2.7-alpine3.8
+
+LABEL maintainer="Sebastian Ramirez <[email protected]>"
+
+RUN pip install flask
+
+# By default, allow unlimited file sizes, modify it to limit the file sizes
+# To have a maximum of 1 MB (Nginx's default) change the line to:
+# ENV NGINX_MAX_UPLOAD 1m
+ENV NGINX_MAX_UPLOAD 0
+
+# By default, Nginx listens on port 80.
+# To modify this, change LISTEN_PORT environment variable.
+# (in a Dockerfile or with an option for `docker run`)
+ENV LISTEN_PORT 80
+
+# Which uWSGI .ini file should be used, to make it customizable
+ENV UWSGI_INI /app/uwsgi.ini
+
+# URL under which static (not modified by Python) files will be requested
+# They will be served by Nginx directly, without being handled by uWSGI
+ENV STATIC_URL /static
+# Absolute path in where the static files wil be
+ENV STATIC_PATH /app/static
+
+# If STATIC_INDEX is 1, serve / with /static/index.html directly (or the static URL configured)
+# ENV STATIC_INDEX 1
+ENV STATIC_INDEX 0
+
+# Add demo app
+COPY ./app /app
+WORKDIR /app
+
+# Make /app/* available to be imported by Python globally to better support several use cases like Alembic migrations.
+ENV PYTHONPATH=/app
+
+# Copy start.sh script that will check for a /app/prestart.sh script and run it before starting the app
+COPY start.sh /start.sh
+RUN chmod +x /start.sh
+
+# Copy the entrypoint that will generate Nginx additional configs
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+
+# Run the start script, it will check for an /app/prestart.sh script (e.g. for migrations)
+# And then will start Supervisor, which in turn will start Nginx and uWSGI
+CMD ["/start.sh"]

python2.7-alpine3.8/app/main.py

@@ -0,0 +1,12 @@
+from flask import Flask
+app = Flask(__name__)
+
+
+@app.route("/")
+def hello():
+    return "Hello World from Flask in a uWSGI Nginx Docker container with \
+     Python 2.7 (default)"
+
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', debug=True, port=80)

python2.7-alpine3.8/app/prestart.sh

@@ -0,0 +1,12 @@
+#! /usr/bin/env sh
+
+echo "Running inside /app/prestart.sh, you could add migrations to this file, e.g.:"
+
+echo "
+#! /usr/bin/env bash
+
+# Let the DB start
+sleep 10;
+# Run migrations
+alembic upgrade head
+"

python2.7-alpine3.8/app/uwsgi.ini

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+[uwsgi]
+module = main
+callable = app

python2.7-alpine3.8/entrypoint.sh

@@ -0,0 +1,58 @@
+#! /usr/bin/env sh
+set -e
+# Get the maximum upload file size for Nginx, default to 0: unlimited
+USE_NGINX_MAX_UPLOAD=${NGINX_MAX_UPLOAD:-0}
+# Generate Nginx config for maximum upload file size
+echo "client_max_body_size $USE_NGINX_MAX_UPLOAD;" > /etc/nginx/conf.d/upload.conf
+
+# Get the number of workers for Nginx, default to 1
+USE_NGINX_WORKER_PROCESSES=${NGINX_WORKER_PROCESSES:-1}
+# Modify the number of worker processes in Nginx config
+sed -i "/worker_processes\s/c\worker_processes ${USE_NGINX_WORKER_PROCESSES};" /etc/nginx/nginx.conf
+
+# Set the max number of connections per worker for Nginx, if requested
+# Cannot exceed worker_rlimit_nofile, see NGINX_WORKER_OPEN_FILES below
+if [ -n "$NGINX_WORKER_CONNECTIONS" ] ; then
+    sed -i "/worker_connections\s/c\    worker_connections ${NGINX_WORKER_CONNECTIONS};" /etc/nginx/nginx.conf
+fi
+
+# Set the max number of open file descriptors for Nginx workers, if requested
+if [ -n "$NGINX_WORKER_OPEN_FILES" ] ; then
+    echo "worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};" >> /etc/nginx/nginx.conf
+fi
+
+# Get the URL for static files from the environment variable
+USE_STATIC_URL=${STATIC_URL:-'/static'}
+# Get the absolute path of the static files from the environment variable
+USE_STATIC_PATH=${STATIC_PATH:-'/app/static'}
+# Get the listen port for Nginx, default to 80
+USE_LISTEN_PORT=${LISTEN_PORT:-80}
+
+# Explicitly add installed Python packages and uWSGI Python packages to PYTHONPATH
+# Otherwise uWSGI can't import Flask
+export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages:/usr/lib/python2.7/site-packages
+
+# Generate Nginx config first part using the environment variables
+echo "server {
+    listen ${USE_LISTEN_PORT};
+    location / {
+        try_files \$uri @app;
+    }
+    location @app {
+        include uwsgi_params;
+        uwsgi_pass unix:///tmp/uwsgi.sock;
+    }
+    location $USE_STATIC_URL {
+        alias $USE_STATIC_PATH;
+    }" > /etc/nginx/conf.d/nginx.conf
+
+# If STATIC_INDEX is 1, serve / with /static/index.html directly (or the static URL configured)
+if [[ $STATIC_INDEX == 1 ]] ; then
+echo "    location = / {
+        index $USE_STATIC_URL/index.html;
+    }" >> /etc/nginx/conf.d/nginx.conf
+fi
+# Finish the Nginx config file
+echo "}" >> /etc/nginx/conf.d/nginx.conf
+
+exec "$@"

python2.7-alpine3.8/start.sh

@@ -0,0 +1,15 @@
+#! /usr/bin/env sh
+set -e
+
+# If there's a prestart.sh script in the /app directory, run it before starting
+PRE_START_PATH=/app/prestart.sh
+echo "Checking for script in $PRE_START_PATH"
+if [ -f $PRE_START_PATH ] ; then
+    echo "Running script $PRE_START_PATH"
+    source $PRE_START_PATH
+else
+    echo "There is no script $PRE_START_PATH"
+fi
+
+# Start Supervisor, with Nginx and uWSGI
+exec /usr/bin/supervisord

python3.6-alpine3.8/Dockerfile

@@ -0,0 +1,49 @@
+FROM tiangolo/uwsgi-nginx:python3.6-alpine3.8
+
+LABEL maintainer="Sebastian Ramirez <[email protected]>"
+
+RUN pip install flask
+
+# By default, allow unlimited file sizes, modify it to limit the file sizes
+# To have a maximum of 1 MB (Nginx's default) change the line to:
+# ENV NGINX_MAX_UPLOAD 1m
+ENV NGINX_MAX_UPLOAD 0
+
+# By default, Nginx listens on port 80.
+# To modify this, change LISTEN_PORT environment variable.
+# (in a Dockerfile or with an option for `docker run`)
+ENV LISTEN_PORT 80
+
+# Which uWSGI .ini file should be used, to make it customizable
+ENV UWSGI_INI /app/uwsgi.ini
+
+# URL under which static (not modified by Python) files will be requested
+# They will be served by Nginx directly, without being handled by uWSGI
+ENV STATIC_URL /static
+# Absolute path in where the static files wil be
+ENV STATIC_PATH /app/static
+
+# If STATIC_INDEX is 1, serve / with /static/index.html directly (or the static URL configured)
+# ENV STATIC_INDEX 1
+ENV STATIC_INDEX 0
+
+# Add demo app
+COPY ./app /app
+WORKDIR /app
+
+# Make /app/* available to be imported by Python globally to better support several use cases like Alembic migrations.
+ENV PYTHONPATH=/app
+
+# Copy start.sh script that will check for a /app/prestart.sh script and run it before starting the app
+COPY start.sh /start.sh
+RUN chmod +x /start.sh
+
+# Copy the entrypoint that will generate Nginx additional configs
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+
+# Run the start script, it will check for an /app/prestart.sh script (e.g. for migrations)
+# And then will start Supervisor, which in turn will start Nginx and uWSGI
+CMD ["/start.sh"]

python3.6-alpine3.8/app/main.py

@@ -0,0 +1,12 @@
+from flask import Flask
+app = Flask(__name__)
+
+
+@app.route("/")
+def hello():
+    return "Hello World from Flask in a uWSGI Nginx Docker container with \
+     Python 3.6 (default)"
+
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', debug=True, port=80)

python3.6-alpine3.8/app/prestart.sh

@@ -0,0 +1,12 @@
+#! /usr/bin/env sh
+
+echo "Running inside /app/prestart.sh, you could add migrations to this file, e.g.:"
+
+echo "
+#! /usr/bin/env bash
+
+# Let the DB start
+sleep 10;
+# Run migrations
+alembic upgrade head
+"

python3.6-alpine3.8/app/uwsgi.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+module = main
+callable = app

python3.6-alpine3.8/entrypoint.sh

@@ -0,0 +1,58 @@
+#! /usr/bin/env sh
+set -e
+# Get the maximum upload file size for Nginx, default to 0: unlimited
+USE_NGINX_MAX_UPLOAD=${NGINX_MAX_UPLOAD:-0}
+# Generate Nginx config for maximum upload file size
+echo "client_max_body_size $USE_NGINX_MAX_UPLOAD;" > /etc/nginx/conf.d/upload.conf
+
+# Get the number of workers for Nginx, default to 1
+USE_NGINX_WORKER_PROCESSES=${NGINX_WORKER_PROCESSES:-1}
+# Modify the number of worker processes in Nginx config
+sed -i "/worker_processes\s/c\worker_processes ${USE_NGINX_WORKER_PROCESSES};" /etc/nginx/nginx.conf
+
+# Set the max number of connections per worker for Nginx, if requested
+# Cannot exceed worker_rlimit_nofile, see NGINX_WORKER_OPEN_FILES below
+if [ -n "$NGINX_WORKER_CONNECTIONS" ] ; then
+    sed -i "/worker_connections\s/c\    worker_connections ${NGINX_WORKER_CONNECTIONS};" /etc/nginx/nginx.conf
+fi
+
+# Set the max number of open file descriptors for Nginx workers, if requested
+if [ -n "$NGINX_WORKER_OPEN_FILES" ] ; then
+    echo "worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};" >> /etc/nginx/nginx.conf
+fi
+
+# Get the URL for static files from the environment variable
+USE_STATIC_URL=${STATIC_URL:-'/static'}
+# Get the absolute path of the static files from the environment variable
+USE_STATIC_PATH=${STATIC_PATH:-'/app/static'}
+# Get the listen port for Nginx, default to 80
+USE_LISTEN_PORT=${LISTEN_PORT:-80}
+
+# Explicitly add installed Python packages and uWSGI Python packages to PYTHONPATH
+# Otherwise uWSGI can't import Flask
+export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python3.6/site-packages:/usr/lib/python3.6/site-packages
+
+# Generate Nginx config first part using the environment variables
+echo "server {
+    listen ${USE_LISTEN_PORT};
+    location / {
+        try_files \$uri @app;
+    }
+    location @app {
+        include uwsgi_params;
+        uwsgi_pass unix:///tmp/uwsgi.sock;
+    }
+    location $USE_STATIC_URL {
+        alias $USE_STATIC_PATH;
+    }" > /etc/nginx/conf.d/nginx.conf
+
+# If STATIC_INDEX is 1, serve / with /static/index.html directly (or the static URL configured)
+if [[ $STATIC_INDEX == 1 ]] ; then
+echo "    location = / {
+        index $USE_STATIC_URL/index.html;
+    }" >> /etc/nginx/conf.d/nginx.conf
+fi
+# Finish the Nginx config file
+echo "}" >> /etc/nginx/conf.d/nginx.conf
+
+exec "$@"

python3.6-alpine3.8/start.sh

@@ -0,0 +1,15 @@
+#! /usr/bin/env sh
+set -e
+
+# If there's a prestart.sh script in the /app directory, run it before starting
+PRE_START_PATH=/app/prestart.sh
+echo "Checking for script in $PRE_START_PATH"
+if [ -f $PRE_START_PATH ] ; then
+    echo "Running script $PRE_START_PATH"
+    source $PRE_START_PATH
+else
+    echo "There is no script $PRE_START_PATH"
+fi
+
+# Start Supervisor, with Nginx and uWSGI
+exec /usr/bin/supervisord

python3.7-alpine3.8/Dockerfile

@@ -0,0 +1,49 @@
+FROM tiangolo/uwsgi-nginx:python3.7-alpine3.8
+
+LABEL maintainer="Sebastian Ramirez <[email protected]>"
+
+RUN pip install flask
+
+# By default, allow unlimited file sizes, modify it to limit the file sizes
+# To have a maximum of 1 MB (Nginx's default) change the line to:
+# ENV NGINX_MAX_UPLOAD 1m
+ENV NGINX_MAX_UPLOAD 0
+
+# By default, Nginx listens on port 80.
+# To modify this, change LISTEN_PORT environment variable.
+# (in a Dockerfile or with an option for `docker run`)
+ENV LISTEN_PORT 80
+
+# Which uWSGI .ini file should be used, to make it customizable
+ENV UWSGI_INI /app/uwsgi.ini
+
+# URL under which static (not modified by Python) files will be requested
+# They will be served by Nginx directly, without being handled by uWSGI
+ENV STATIC_URL /static
+# Absolute path in where the static files wil be
+ENV STATIC_PATH /app/static
+
+# If STATIC_INDEX is 1, serve / with /static/index.html directly (or the static URL configured)
+# ENV STATIC_INDEX 1
+ENV STATIC_INDEX 0
+
+# Add demo app
+COPY ./app /app
+WORKDIR /app
+
+# Make /app/* available to be imported by Python globally to better support several use cases like Alembic migrations.
+ENV PYTHONPATH=/app
+
+# Copy start.sh script that will check for a /app/prestart.sh script and run it before starting the app
+COPY start.sh /start.sh
+RUN chmod +x /start.sh
+
+# Copy the entrypoint that will generate Nginx additional configs
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+
+# Run the start script, it will check for an /app/prestart.sh script (e.g. for migrations)
+# And then will start Supervisor, which in turn will start Nginx and uWSGI
+CMD ["/start.sh"]

python3.7-alpine3.8/app/main.py

@@ -0,0 +1,12 @@
+from flask import Flask
+app = Flask(__name__)
+
+
+@app.route("/")
+def hello():
+    return "Hello World from Flask in a uWSGI Nginx Docker container with \
+     Python 3.7 (default)"
+
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', debug=True, port=80)

python3.7-alpine3.8/app/prestart.sh

@@ -0,0 +1,12 @@
+#! /usr/bin/env sh
+
+echo "Running inside /app/prestart.sh, you could add migrations to this file, e.g.:"
+
+echo "
+#! /usr/bin/env bash
+
+# Let the DB start
+sleep 10;
+# Run migrations
+alembic upgrade head
+"

python3.7-alpine3.8/app/uwsgi.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+module = main
+callable = app