commit initial build-android-app.sh

build-android-app.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+set -ex 
+
+CONTAINERRUNTIMES='docker' # currently not enabled podman nerdctl
+for CONTAINERRUNTIME in $CONTAINERRUNTIMES /
+do
+    type $CONTAINERRUNTIME 2>/dev/null && break
+    test "$CONTAINERRUNTIME" = / && { 
+        echo "install a container runtime (e.g ${CONTAINERRUNTIMES//\ /\/})" >&2
+        exit 2
+    }
+done
+
+HASHES='md5sum cksum sha1sum base64 uuencode'
+for HASH in $HASHES /
+do
+    type $HASH 2>/dev/null && break
+    test "$HASH" = / && { 
+        echo "install checksum (e.g ${HASHES//\ /\/})" >&2
+        exit 3
+    }
+done
+
+DockerfileContent(){
+cat << DOCKERFILEEOF
+FROM debian:latest
+RUN apt-get update -y && apt-get install -y make
+COPY --from=docker:cli /usr/local/bin/docker /usr/local/bin/
+COPY --from=docker:cli /usr/local/libexec/docker /usr/local/libexec/docker
+DOCKERFILEEOF
+}
+
+diff Dockerfile <(DockerfileContent) 2>/dev/null > /dev/null || {
+    read -p 'reset/start Dockerfile[Y/n]' YES
+    test "$YES" = "n" && { echo "aborting..." >&2; exit 1; }
+    DockerfileContent > Dockerfile
+}
+
+
+IMAGE=android-app:"$($HASH Dockerfile | tr -cd '[a-zA-Z0-9]' | head -c 12)"
+$CONTAINERRUNTIME build --tag "$IMAGE" .
+
+SOCKET="$($CONTAINERRUNTIME context inspect | grep '"Host":' | cut -d'"' -f4)"
+test "${SOCKET:0:8}" = "unix:///" || {
+    echo "Container runtime socket needs to be a unix socket and thus mountable" >&2
+    exit 4
+}
+
+$CONTAINERRUNTIME run -v "${SOCKET:7}":"/var/run/docker.sock" -it --rm "$IMAGE" 
+