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Docker - how can I copy a file from an image to a host?
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docker cp $(docker create --rm registry.example.com/ansible-base:latest):/home/ansible/.ssh/id_rsa ./hacked_ssh_key
wanted to supply a one line solution based on pure docker functionality (no bash needed)
edit: container does not even has to be run in this solution
edit2: thanks to @...
What file uses .md extension and how should I edit them?
... an editor, I suggest you use http://dillinger.io/. It is a simple browser-based text editor that can render Markdown on the fly.
However, if you prefer an app, and you are using OS X, you could try Mou. It is quite good and full of examples.
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When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
...which means easy help is available.
"Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions". Beware - "microframework" may be misleading. This does not mean that Flask is a half-baked library. This mean the core of flask is very, very simple. Unlike Django, It will not...
What is ECMAScript?
...s a Standard for a scripting languages.
Languages like Javascript are based on the ECMAScript standard.
ECMA Standard is based on several originating technologies, the most well known being JavaScript (Netscape) and JScript (Microsoft).
ECMA means European Computer Manufactu...
Why is the Fibonacci series used in agile planning poker? [closed]
...for the higher uncertainty for larger items.
Determining the most optimal base of the exponential scale (normalization) is difficult in practise. The base corresponding to the Fibonacci scale may or may not be optimal.
Here is a more detailed explanation of the mathematical justification: http://w...
Create subdomains on the fly with .htaccess (PHP)
...an application as the question proposes.
I have documented my mod_rewrite based mass virtual hosting environment before in a post on my blog, which you could look at if that is the route you wish to take. There is also, of course, the respective Apache manual page.
Apache also has an internal way ...
Are database triggers evil? [closed]
Are database triggers a bad idea?
20 Answers
20
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How to get .pem file from .key and .crt files?
...egins with -----BEGIN and you can read it in a text editor:
The file uses base64, which is readable in ASCII, not binary format. The certificate is already in PEM format. Just change the extension to .pem.
If the file is in binary:
For the server.crt, you would use
openssl x509 -inform DER -outf...
Type erasure techniques
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so, if the shared_ptr then stores a Derived *, but the Base * did not declare the destructor as virtual, shared_ptr<void> still works as intended, since it never even knew about a base class to begin with. Cool!
– TamaMcGlinn
May 30 '1...
How to convert a PNG image to a SVG? [closed]
...t to SVG. And finally, merge the three SVG content in one file (SVG is XML based). Hope this could help... Cheers ;-)
– olibre
Oct 9 '14 at 19:21
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