test-in-lxd: remove privileged container usage (#974)

* test-in-lxd: remove privileged container usage

* Don't assume certain home directory name

* Try enabling groovy

.github/workflows/build.yaml

@@ -10,6 +10,7 @@ jobs:
         image:
           - ubuntu-daily:bionic
           - ubuntu-daily:focal
+          - ubuntu-daily:groovy
           - ubuntu-daily:hirsute
           - ubuntu-daily:impish
     steps:

scripts/test-in-lxd.sh

@@ -5,8 +5,15 @@ SCRIPT=$2
 
 lxd init --auto
 
-lxc launch $IMAGE tester -c security.privileged=true
+lxc launch $IMAGE tester
 lxc config device add tester code disk source=`pwd` path=/subiquity
+# copy is allowed to fail, in case the subiquity directory being tested
+# includes some uncopyable stuff
+lxc exec tester -- sh -ec "
+    cd ~
+    sudo cp -a /subiquity . || true
+    [ -d ~/subiquity ]
+    "
 
 attempts=0
 while ! lxc file pull tester/etc/resolv.conf - 2> /dev/null | grep -q ^nameserver; do
@@ -32,4 +39,7 @@ then
     done
 fi
 
-lxc exec tester -- sh -c "cd /subiquity && ./scripts/installdeps.sh && $SCRIPT"
+lxc exec tester -- sh -ec "
+    cd ~/subiquity
+    ./scripts/installdeps.sh
+    $SCRIPT"