Anbox doesn't come pre-installed with Google Play Store and there's not even a package installer, so the only way to install applications in Anbozx is through Android Debug Bridge, aka ADB.
adb install /path/to/file.apk
which would result in installing the application in Anbox, which worked for me for installing QuickPic and Snapseed, but it failed in installing Opera Mini and WPS Office giving the following error:
Input:
adb install /home/sumeet/Downloads/opera.apk
Output:
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
30103 KB/s (4597754 bytes in 0.149s)
Failure [INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113]
Is this an Anbox problem, an Ubuntu problem or an ADB problem that can be fixed? Since Anbox is essentially just an Android emulator running on top of Linux, how can I fix this?