diff --git a/README.md b/README.md
index 60384de8..4045a07f 100644
--- a/README.md
+++ b/README.md
@@ -346,6 +346,24 @@ For example, to have a maximum upload file size of 1 MB (Nginx's default) add a
 ENV NGINX_MAX_UPLOAD 1m
 ```
 
+### Custom listen port
+
+By default, the container made from this image will listen on port 80.
+
+To change this behavior, set the `LISTEN_PORT` environment variable. You might also need to create the respective `EXPOSE` Docker instruction.
+
+You can do that in your `Dockerfile`, it would look something like:
+
+```Dockerfile
+FROM tiangolo/uwsgi-nginx-flask:python3.6
+
+ENV LISTEN_PORT 8080
+
+EXPOSE 8080
+
+COPY ./app /app
+```
+
 ### Custom `uwsgi.ini` file
 
 You can override where the image should look for the app `uwsgi.ini` file using the envirnoment variable `UWSGI_INI`.
@@ -619,6 +637,8 @@ You will see your Flask debugging server start, you will see how it sends respon
 
 ## What's new
 
+2017-12-08: Now you can configure which port the container should listen on, using the environment variable `LISTEN_PORT`.
+
 2017-09-10: Updated examples and sample project to work with SPAs even when structuring the app as a package (with subdirectories).
 
 2017-09-02: 
diff --git a/python2.7/Dockerfile b/python2.7/Dockerfile
index 61457d69..ab9e726e 100644
--- a/python2.7/Dockerfile
+++ b/python2.7/Dockerfile
@@ -9,6 +9,11 @@ RUN pip install flask
 # 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
 
diff --git a/python2.7/entrypoint.sh b/python2.7/entrypoint.sh
index d3f97dd4..421bac29 100644
--- a/python2.7/entrypoint.sh
+++ b/python2.7/entrypoint.sh
@@ -9,17 +9,20 @@ echo "client_max_body_size $USE_NGINX_MAX_UPLOAD;" > /etc/nginx/conf.d/upload.co
 USE_STATIC_URL=${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}
 
 # Generate Nginx config first part using the environment variables
-echo 'server {
+echo "server {
+    listen ${USE_LISTEN_PORT};
     location / {
-        try_files $uri @app;
+        try_files \$uri @app;
     }
     location @app {
         include uwsgi_params;
         uwsgi_pass unix:///tmp/uwsgi.sock;
     }
-    '"location $USE_STATIC_URL {
+    location $USE_STATIC_URL {
         alias $USE_STATIC_PATH;
     }" > /etc/nginx/conf.d/nginx.conf
 
diff --git a/python3.5/Dockerfile b/python3.5/Dockerfile
index c2acdb2a..4b1845d6 100644
--- a/python3.5/Dockerfile
+++ b/python3.5/Dockerfile
@@ -9,6 +9,11 @@ RUN pip install flask
 # 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
 
diff --git a/python3.5/entrypoint.sh b/python3.5/entrypoint.sh
index d3f97dd4..421bac29 100644
--- a/python3.5/entrypoint.sh
+++ b/python3.5/entrypoint.sh
@@ -9,17 +9,20 @@ echo "client_max_body_size $USE_NGINX_MAX_UPLOAD;" > /etc/nginx/conf.d/upload.co
 USE_STATIC_URL=${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}
 
 # Generate Nginx config first part using the environment variables
-echo 'server {
+echo "server {
+    listen ${USE_LISTEN_PORT};
     location / {
-        try_files $uri @app;
+        try_files \$uri @app;
     }
     location @app {
         include uwsgi_params;
         uwsgi_pass unix:///tmp/uwsgi.sock;
     }
-    '"location $USE_STATIC_URL {
+    location $USE_STATIC_URL {
         alias $USE_STATIC_PATH;
     }" > /etc/nginx/conf.d/nginx.conf
 
diff --git a/python3.6/Dockerfile b/python3.6/Dockerfile
index 835c6d55..ac9eae0d 100644
--- a/python3.6/Dockerfile
+++ b/python3.6/Dockerfile
@@ -9,6 +9,11 @@ RUN pip install flask
 # 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
 
diff --git a/python3.6/entrypoint.sh b/python3.6/entrypoint.sh
index d3f97dd4..421bac29 100644
--- a/python3.6/entrypoint.sh
+++ b/python3.6/entrypoint.sh
@@ -9,17 +9,20 @@ echo "client_max_body_size $USE_NGINX_MAX_UPLOAD;" > /etc/nginx/conf.d/upload.co
 USE_STATIC_URL=${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}
 
 # Generate Nginx config first part using the environment variables
-echo 'server {
+echo "server {
+    listen ${USE_LISTEN_PORT};
     location / {
-        try_files $uri @app;
+        try_files \$uri @app;
     }
     location @app {
         include uwsgi_params;
         uwsgi_pass unix:///tmp/uwsgi.sock;
     }
-    '"location $USE_STATIC_URL {
+    location $USE_STATIC_URL {
         alias $USE_STATIC_PATH;
     }" > /etc/nginx/conf.d/nginx.conf