containers/org.eclipse.linuxtools.docker.editor/assets/additional-info/COPY.html

<p>
<b>COPY</b> copies new files or directories from source and adds them to the filesystem of the container at the destination path
</p>
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<p>
<pre>
COPY hom* /mydir/        # adds all files starting with "hom"
</pre>
</p>