apt update fails in arm32v7/httpd:2.4.33 image

After runnnig `apt-get update` I got the follwoing error:
```
W: Failed to fetch http://deb.debian.org/debian/dists/jessie-updates/InRelease  Unable to find expected entry 'main/binary-armhf/Packages' in Release file (Wrong sources.list entry or malformed file)

W: Failed to fetch http://deb.debian.org/debian/dists/jessie-backports/main/binary-armhf/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.
```

Some of the repos are not maintained anymore.

But we can bypass the problem by returning true if this happens.

Dockerfile.arm32v7

@@ -46,7 +46,9 @@ FROM arm32v7/httpd:2.4.33
 # A better approach will be to build static version of aria2.
 
 # download aria2 dependendies
-RUN apt-get update && apt-get install -y --no-install-recommends \
+RUN apt-get update || true
+
+RUN apt-get install -y --no-install-recommends \
       busybox \
       ca-certificates \
       libc-ares2 \