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Estimated reading time: 7 minutes This quick-start guide demonstrates how to use Docker Compose to set up and run a simple Django/PostgreSQL app. Before starting,install Compose.
Define the project components
For this project, you need to create a Dockerfile, a Python dependencies file,and a
docker-compose.yml
file. (You can use either a .yml
or .yaml
extension for this file.)- Create an empty project directory.You can name the directory something easy for you to remember. This directory is the context for your application image. The directory should only contain resources to build that image.
- Create a new file called
Dockerfile
in your project directory.The Dockerfile defines an application’s image content via one or more build commands that configure that image. Once built, you can run the image in a container. For more information onDockerfile
, see the Docker user guide and the Dockerfile reference. - Add the following content to the
Dockerfile
.ThisDockerfile
starts with a Python 3 parent image. The parent image is modified by adding a newcode
directory. The parent image is further modified by installing the Python requirements defined in therequirements.txt
file. - Save and close the
Dockerfile
. - Create a
requirements.txt
in your project directory.This file is used by theRUN pip install -r requirements.txt
command in yourDockerfile
. - Add the required software in the file.
- Save and close the
requirements.txt
file. - Create a file called
docker-compose.yml
in your project directory. Easy animation software, free download.Thedocker-compose.yml
file describes the services that make your app. In this example those services are a web server and database. The compose file also describes which Docker images these services use, how they link together, any volumes they might need mounted inside the containers. Finally, thedocker-compose.yml
file describes which ports these services expose. See thedocker-compose.yml
reference for more information on how this file works. - Add the following configuration to the file.This file defines two services: The
db
service and theweb
service. - Save and close the
docker-compose.yml
file.
Create a Django project
In this step, you create a Django starter project by building the image from the build context defined in the previous procedure.
- Change to the root of your project directory.
- Create the Django project by runningthe docker-compose run command as follows.This instructs Compose to run
django-admin startproject composeexample
in a container, using theweb
service’s image and configuration. Because theweb
image doesn’t exist yet, Compose builds it from the current directory, as specified by thebuild: .
line indocker-compose.yml
.Once theweb
service image is built, Compose runs it and executes thedjango-admin startproject
command in the container. This command instructs Django to create a set of files and directories representing a Django project. - After the
docker-compose
command completes, list the contents of your project.If you are running Docker on Linux, the filesdjango-admin
created are owned by root. This happens because the container runs as the root user. Change the ownership of the new files.If you are running Docker on Mac or Windows, you should already have ownership of all files, including those generated bydjango-admin
. List the files just to verify this.
Connect the database
In this section, you set up the database connection for Django.
![Set up password postgres mac app download Set up password postgres mac app download](/uploads/1/2/6/1/126189792/951899287.png)
- In your project directory, edit the
composeexample/settings.py
file. - Replace the
DATABASES = ..
with the following:These settings are determined by thepostgres Docker imagespecified indocker-compose.yml
. - Save and close the file.
- Run the docker-compose up command from the top level directory for your project.At this point, your Django app should be running at port
8000
onyour Docker host. On Docker Desktop for Mac and Docker Desktop for Windows, gotohttp://localhost:8000
on a web browser to see the Djangowelcome page. If you are using Docker Machine,thendocker-machine ip MACHINE_VM
returns the Docker host IPaddress, to which you can append the port (<Docker-Host-IP>:8000
).Note:On certain platforms (Windows 10), you might need to editALLOWED_HOSTS
insidesettings.py
and add your Docker host name or IP address to the list. For demo purposes, you can set the value to:This value is not safe for production usage. Refer to the Django documentation for more information. - List running containers.In another terminal window, list the running Docker processes with the
docker container ls
command. - Shut down services and clean up by using either of these methods:
- Stop the application by typing
Ctrl-C
in the same shell in where you started it: - Or, for a more elegant shutdown, switch to a different shell, and run docker-compose down from the top level of your Django sample project directory.
Once you’ve shut down the app, you can safely remove the Django project directory (for example,
rm -rf django
).More Compose documentation
documentation, docs, docker, compose, orchestration, containersAdd your email account
Postgres App Mac
If you don't have an email account set up, Mail prompts you to add your email account.
To add another account, choose Mail > Add Account from the menu bar in Mail. Or choose Apple menu > System Preferences, click Internet Accounts, then click the type of account to add.
- When adding an account, if you get a message that your account provider requires completing authentication in Safari, click Open Safari and follow the sign-in instructions in the Safari window.
- If necessary, Mail might ask you for additional settings.
Learn more about how to add or remove email accounts.
Send and reply
Learn how to compose, reply to, and forward email.
Send new messages
- Click New Message in the Mail toolbar, or choose File > New Message.
- Enter a name, email address, or group name in the 'To' field. Mail gives suggestions based on your contacts and messages on your Mac and devices signed into iCloud.1
- Enter a subject for your message.
- Write your email in the body of the message.
- To add an attachment, drag an attachment to the body of the message. Or choose File > Attach Files, choose an attachment, then click Choose.
- To change your font and format, use the options at the top of the message window.
- Beginning with macOS Mojave, it's even easier to add emoji to your messages. Just click the Emoji & Symbols button in the toolbar at the top of the message window, then choose emoji or other symbols from the character viewer.
- Send or save your message:
- To send, click the Send button or choose Message > Send.
- To save your message as a draft for later, close the message, then click Save.
Reply and forward
- To reply to a single person, click Reply , type your response, then click Send .
- To reply to everyone on a group email, click Reply All , type your response, then click Send .
- To forward a message to other people, click Forward , type your response, then click Send .
Organize and search
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Sort your emails into folders and use multiple search options to find specific messages.
Create folders
You can create Mailboxes to organize your emails into folders.
- Open Mail, then choose Mailbox > New Mailbox from the menu bar.
- In the dialog that appears, choose the location for the Mailbox.
- Choose your email service (like iCloud) to access your Mailbox on your other devices, such as an iPhone signed into the same email account.
- Choose On My Mac to access your Mailbox only on your Mac.
- Name the mailbox and click OK.
If you don't see the mailboxes sidebar, choose View > Show Mailbox List. To show or hide mailboxes from an email account, move your pointer over a section in the sidebar and click Show or Hide.
Sort your emails
To move a message from your Inbox to a mailbox:
- Drag the message onto a mailbox in the sidebar.
- In macOS Mojave, you can select the message, then click Move in the Mail toolbar to file the message into the suggested mailbox. Mail makes mailbox suggestions based on where you've filed similar messages in the past, so suggestions get better the more you file your messages.
To delete a message, select a message, then press the Delete key.
To automatically move messages to specific mailboxes, use rules.
Search
Use the Search field in the Mail window to search by sender, subject, attachments, and more. To narrow your search, choose an option from the menu that appears as you type.
Add and mark up attachments
Best local backup software for mac. Attach documents and files to your messages and use Markup to annotate, add your signature, and more.
Attach a file
To attach a file to your message:
- Drag an attachment to the body of the message.
- Choose File > Attach Files, choose an attachment, then click Choose.
Use Markup with your attachments
You can use Markup to draw and type directly on an attachment, like an image or PDF document.2
- Click the Attach button or choose File > Attach Files in the message window.
- Choose an attachment, then click Choose File.
- Click the menu icon that appears in the upper-right corner of the attachment, then choose Markup.
- Use the Sketch tool to create freehand drawings.
- Use the Shapes tool to add shapes like rectangles, ovals, lines, and arrows.
- Use the Zoom tool in the Shapes menu to magnify and call attention to a part of an attachment.
- Use the Text tool to add text.
- Use the Sign tool to add your signature.
- Click Done.
Learn more
- Contact Apple Support.
1. All devices signed into iCloud with the same Apple ID share contacts. Contacts addressed in previous messages that were sent and received on those devices are also included. To control this feature, turn Contacts on or off for iCloud. On Mac, choose Apple menu > System Preferences, then click iCloud. On iOS devices, go to Settings, tap your name at the top of the screen, then tap iCloud.
2. Markup is available in OS X Yosemite and later.