Merge pull request #834 from cvgw/u/cgwippern/ISSUE_439_strip_arg_quotes

Issue #439 Strip out double quotes in ARG value

integration/dockerfiles/Dockerfile_test_arg_blank_with_quotes

@@ -0,0 +1,12 @@
+ARG FILE_NAME=""
+
+FROM busybox:latest AS builder
+ARG FILE_NAME
+
+RUN echo $FILE_NAME && touch /$FILE_NAME.txt && stat /$FILE_NAME.txt;
+
+FROM busybox:latest
+ARG FILE_NAME
+
+RUN echo $FILE_NAME && touch /$FILE_NAME.txt && stat /$FILE_NAME.txt;
+COPY --from=builder /$FILE_NAME.txt /

integration/dockerfiles/Dockerfile_test_arg_from_quotes

@@ -0,0 +1,3 @@
+ARG IMAGE_NAME="busybox:latest"
+
+FROM $IMAGE_NAME

integration/dockerfiles/Dockerfile_test_arg_from_single_quotes

@@ -0,0 +1,3 @@
+ARG IMAGE_NAME='busybox:latest'
+
+FROM $IMAGE_NAME

integration/dockerfiles/Dockerfile_test_arg_multi_with_quotes

@@ -0,0 +1,12 @@
+ARG FILE_NAME="myFile"
+
+FROM busybox:latest AS builder
+ARG FILE_NAME
+
+RUN echo $FILE_NAME && touch /$FILE_NAME.txt && stat /$FILE_NAME.txt;
+
+FROM busybox:latest
+ARG FILE_NAME
+
+RUN echo $FILE_NAME && touch /$FILE_NAME.txt && stat /$FILE_NAME.txt;
+COPY --from=builder /$FILE_NAME.txt /