diff --git a/plugins/common/functions b/plugins/common/functions
index 562ee1310..cb0a7a2af 100755
--- a/plugins/common/functions
+++ b/plugins/common/functions
@@ -325,7 +325,7 @@ copy_from_image() {
       [[ -z "$WORKDIR" ]] && local WORKDIR=/app
       local SRC_FILE="$WORKDIR/$SRC_FILE"
     fi
-    local CID=$(docker run "$DOKKU_GLOBAL_RUN_ARGS" -d "$IMAGE" bash)
+    local CID=$(docker create "$DOKKU_GLOBAL_RUN_ARGS" "$IMAGE")
     docker cp "$CID:$SRC_FILE" "$DST_DIR"
     docker rm -f "$CID" &> /dev/null
   else
diff --git a/tests.mk b/tests.mk
index 24f0dbd22..8eb1eaa7d 100644
--- a/tests.mk
+++ b/tests.mk
@@ -5,7 +5,6 @@ ifneq ($(shell shellcheck --version > /dev/null 2>&1 ; echo $$?),0)
 ifeq ($(SYSTEM),Darwin)
 	brew install shellcheck
 else
-	sudo apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 5072E1F5
 	sudo add-apt-repository 'deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse'
 	sudo rm -rf /var/lib/apt/lists/* && sudo apt-get clean
 	sudo apt-get update -qq && sudo apt-get install -qq -y shellcheck