diff --git a/bootstrap.sh b/bootstrap.sh
index e4f444b..39e31b7 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -20,7 +20,7 @@ DEFAULT_PROJECT_NAME=${PROJECT_PATH##*/}
 configure=0
 build=0
 docker=0
-buildtarget="distcheck"
+buildtarget=""
 overwrite=0
 rebuild=0
 rebuildfiles=()
@@ -28,8 +28,9 @@ while test $# -gt 0; do
     case "$1" in
         (--configure|-c) configure=1;;
         (--docker|-d) docker=1;;
-        (--build|-b) configure=1; build=1;;
-        (--target|-t) shift; configure=1; build=1; buildtarget="$1";;
+        (--build|-b) configure=1; build=1; buildtarget+=" distcheck";;
+        (--target|-t) shift; configure=1; build=1; buildtarget+=" $1";;
+        (--clean) shift; configure=1; build=1; buildtarget+=" maintainer-clean";;
         (--overwrite|-o) overwrite=1;;
         (--rebuild|-r) rebuild=1;;
         (--rebuild-file|-f) shift; rebuildfiles+=("$1");;
diff --git a/build-in-docker.conf b/build-in-docker.conf
new file mode 100644
index 0000000..b731674
--- /dev/null
+++ b/build-in-docker.conf
@@ -0,0 +1,5 @@
+repos="ppa:cordova-ubuntu/ppa"
+if test -n "${ANDROID_HOME}"; then
+   envs="-e ANDROID_HOME=${ANDROID_HOME}"
+   dirs="-v ${ANDROID_HOME}:${ANDROID_HOME}:ro"
+fi
diff --git a/build-in-docker.sh b/build-in-docker.sh
index bb07c16..b9a583d 100755
--- a/build-in-docker.sh
+++ b/build-in-docker.sh
@@ -1,20 +1,90 @@
-#! /bin/bash -ex
+#! /bin/bash -e
 
 # build and test everything in a fresh docker installation
+img="ubuntu:latest"
+repos=""
+keys=""
+envs=""
+dirs="-v $(pwd):/workdir"
+targets="all check distcheck"
+if test -e ./build-in-docker.conf; then
+    # you can preconfigure the variables in file build-in-docker.conf
+    # if you do so, add the file to EXTRA_DIST in makefile.am
+    source ./build-in-docker.conf
+fi
+while test $# -gt 0; do
+    case "$1" in
+        (-h|--help)
+            echo "$0 [OPTIONS]"
+            echo
+            echo "OPTIONS:"
+            echo "  -h, --help           show this help"
+            echo "  -i --image <image>   use given docker image instead of ${img}"
+            echo "  -t --targets targets specify build targets, default: ${targets}"
+            echo "  -r --repo <url>      add given apt repository"
+            echo "  -k --key <url>       add public key from url"
+            echo "  -e --env <var>=<val> set environment variable in docker"
+            echo "  -d --dir <dir>       access given directory read only"
+            echo
+            echo "EXAMPLE:"
+            echo
+            echo "$0 -i mwaeckerlin/ubuntu:trusty-i386 \\"
+            echo "                    -t deb \\"
+            echo "                    -e ANDROID_HOME=/opt/local/android \\"
+            echo "                    -d /opt/local/android \\"
+            echo "                    -r universe \\"
+            echo "                    -r https://dev.marc.waeckerlin.org/repository \\"
+            echo "                    -k https://dev.marc.waeckerlin.org/repository/PublicKey"
+            echo
+            exit 0
+            ;;
+        (-i|--image) shift;
+            img="$1"
+            ;;
+        (-t|--targets) shift;
+            targets="$1"
+            ;;
+        (-r|--repo) shift;
+            repos+=" $1"
+            ;;
+        (-k|--key) shift;
+            keys+=" $1"
+            ;;
+        (-e|--env) shift;
+            envs+=" -e $1"
+            ;;
+        (-d|--dirs) shift;
+            dirs+=" -v $1:$1:ro"
+            ;;
+        (*)
+            echo "**** ERROR: unknown option '$1', try --help" 1>&2
+            exit 1
+            ;;
+    esac
+    if test $# -eq 0; then
+        echo "**** ERROR: missing value, try --help" 2>61
+        exit 1
+    fi
+    shift
+done
+
+set -x
 
-DOCKER_ID=$(docker run -d -v $(pwd):/workdir -w /workdir ubuntu sleep infinity)
+DOCKER_ID=$(docker run -d ${dirs} ${envs} -w /workdir $img sleep infinity)
 trap "docker rm -f ${DOCKER_ID}" INT TERM EXIT
 docker exec ${DOCKER_ID} apt-get install -y software-properties-common apt-transport-https dpkg-dev
-docker exec ${DOCKER_ID} apt-add-repository universe
-docker exec ${DOCKER_ID} apt-add-repository https://dev.marc.waeckerlin.org/repository
-wget -O- https://dev.marc.waeckerlin.org/repository/PublicKey \
-   | docker exec -i ${DOCKER_ID} apt-key add -
-if test -n "$*"; then
-    for p in $*; do
-        docker exec ${DOCKER_ID} apt-add-repository $p
+if test -n "${repos}"; then
+    for repo in ${repos}; do
+        docker exec ${DOCKER_ID} apt-add-repository ${repo}
+    done
+fi
+if test -n "${keys}"; then
+    for key in ${keys}; do
+        wget -O- ${key} \
+            | docker exec -i ${DOCKER_ID} apt-key add -
     done
 fi
 docker exec ${DOCKER_ID} apt-get update
 docker exec ${DOCKER_ID} ./resolve-debbuilddeps.sh
 docker exec -u $(id -u) ${DOCKER_ID} svn upgrade || true
-docker exec -u $(id -u) ${DOCKER_ID} ./bootstrap.sh -t "all check distcheck"
+docker exec -u $(id -u) ${DOCKER_ID} ./bootstrap.sh -t "${targets}"
diff --git a/configure.ac b/configure.ac
index c3e0009..6663916 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,6 +34,12 @@ AC_PATH_PROG(ANDROID, [android], [0],
                       [${PATH}${PATH_SEPARATOR}${ANDROID_HOME}/tools])
 AC_PATH_PROG(CORDOVA, [cordova], [0],
                       [${PATH}${PATH_SEPARATOR}$(pwd)/node_modules/cordova/bin])
+if test ${CORDOVA} = 0; then
+   AC_MSG_WARN([cordova is missing, on ubuntu install cordova-cli from repository ppa:cordova-ubuntu/ppa])
+fi
+if test ${ANDROID} = 0; then
+   AC_MSG_WARN([android sdk is missing, set variable ANDROID_HOME after installation])
+fi
 AM_CONDITIONAL(HAVE_CORDOVA, [test ${CORDOVA} != 0 -a ${ANDROID} != 0])
 AX_SUBST(CORDOVA)
 
diff --git a/makefile.am b/makefile.am
index d12b856..a6a41e3 100644
--- a/makefile.am
+++ b/makefile.am
@@ -8,6 +8,11 @@
 
 SUBDIRS = scripts doc html cordova test
 
+EXTRA_DIST = build-in-docker.conf
+
 doc_DATA = AUTHORS NEWS README COPYING INSTALL ChangeLog
 
+maintainer-clean-local:
+	-rm -rf node_modules
+
 MAINTAINERCLEANFILES = makefile.in