Update README.md

Author: p-web-git

README.md

@@ -1 +1,28 @@
-# kopia-android
+# kopia-android
+
+## Problem
+
+When trying to execute kopia on termux running on android 14, I was failing to connect to the repositiory because kopia failed to you the DNS from android. So when doing
+
+``` bash
+$ kopia repositiory connect s3 \
+      --bucket=test \
+      --endpoint=minio.mydomain.org:9001 \
+      ...
+ERROR can't connect to storage: error retrieving storage config from bucket "test": Get "https://minio.mydomain.org:9001/test/.storageconfig": dial tcp: lookup minio.mydomain.org on [::1]:53: read udp [::1]:60141->[::1]:53: read: connection refused
+```
+
+## Solution 
+
+Build kopia from source and ensures the cgo DNS resolver is used
+
+```bash
+$ wget https://dl.google.com/android/repository/android-ndk-r28c-linux.zip
+$ unzip android-ndk-r28c-linux.zip
+$ export ANDROID_NDK=~/src/android-ndk-r28c
+$ export CC="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
+$ export CXX="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
+$ export GOOS=android GOARCH=arm64 CGO_ENABLED=1
+$ go install -tags netcgo -o kopia-android github.com/kopia/kopia@v0.21.1
+```
+