Use single quote whenever possible

Author: rosbo

build

@@ -12,9 +12,9 @@ Options:
 EOF
 }
 
-CACHE_FLAG="--no-cache"
-DOCKERFILE="Dockerfile"
-IMAGE_TAG="kaggle/python-build"
+CACHE_FLAG='--no-cache'
+DOCKERFILE='Dockerfile'
+IMAGE_TAG='kaggle/python-build'
 
 while :; do
     case "$1" in 
@@ -23,11 +23,11 @@ while :; do
             exit
             ;;
         -g|--gpu)
-            IMAGE_TAG="kaggle/python-gpu-build"
-            DOCKERFILE="gpu.Dockerfile"
+            IMAGE_TAG='kaggle/python-gpu-build'
+            DOCKERFILE='gpu.Dockerfile'
             ;;
         -c|--use-cache)
-            CACHE_FLAG=""
+            CACHE_FLAG=''
             ;;
         -?*)
             usage

diff

@@ -12,8 +12,8 @@ EOF
 }
 
 
-BASE_IMAGE_TAG="gcr.io/kaggle-images/python:latest"
-TARGET_IMAGE_TAG="kaggle/python-build"
+BASE_IMAGE_TAG='gcr.io/kaggle-images/python:latest'
+TARGET_IMAGE_TAG='kaggle/python-build'
 
 while :; do
     case "$1" in 
@@ -22,8 +22,8 @@ while :; do
             exit
             ;;
         -g|--gpu)
-            BASE_IMAGE_TAG="gcr.io/kaggle-private-byod/python:latest"
-            TARGET_IMAGE_TAG="kaggle/python-gpu-build"
+            BASE_IMAGE_TAG='gcr.io/kaggle-private-byod/python:latest'
+            TARGET_IMAGE_TAG='kaggle/python-gpu-build'
             ;;
         -?*)
             usage
@@ -51,5 +51,5 @@ for cmd in "${CMDS[@]}"; do
     diff --suppress-common-lines --side-by-side \
         <(docker run --rm "$BASE_IMAGE_TAG" $cmd) \
         <(docker run --rm "$TARGET_IMAGE_TAG" $cmd) \
-        && echo "No diff" || true
+        && echo 'No diff' || true
 done

push

@@ -11,8 +11,8 @@ Options:
 EOF
 }
 
-SOURCE_IMAGE="kaggle/python-build"
-TARGET_IMAGE="gcr.io/kaggle-images/python"
+SOURCE_IMAGE='kaggle/python-build'
+TARGET_IMAGE='gcr.io/kaggle-images/python'
 
 while :; do
     case "$1" in 
@@ -21,8 +21,8 @@ while :; do
             exit
             ;;
         -g|--gpu)
-            SOURCE_IMAGE="kaggle/python-gpu-build"
-            TARGET_IMAGE="gcr.io/kaggle-private-byod/python"
+            SOURCE_IMAGE='kaggle/python-gpu-build'
+            TARGET_IMAGE='gcr.io/kaggle-private-byod/python'
             ;;
         -?*)
             usage

tensorflow-whl/build

@@ -11,8 +11,8 @@ Options:
 EOF
 }
 
-CACHE_FLAG="--no-cache"
-IMAGE_TAG="kaggle/python-tensorflow-whl"
+CACHE_FLAG='--no-cache'
+IMAGE_TAG='kaggle/python-tensorflow-whl'
 
 while :; do
     case "$1" in 
@@ -21,7 +21,7 @@ while :; do
             exit
             ;;
         -c|--use-cache)
-            CACHE_FLAG=""
+            CACHE_FLAG=''
             ;;
         -?*)
             usage

tensorflow-whl/push

@@ -11,8 +11,8 @@ EOF
 
 set -x
 
-SOURCE_IMAGE="kaggle/python-tensorflow-whl"
-TARGET_IMAGE="gcr.io/kaggle-images/python-tensorflow-whl"
+SOURCE_IMAGE='kaggle/python-tensorflow-whl'
+TARGET_IMAGE='gcr.io/kaggle-images/python-tensorflow-whl'
 
 while :; do
     case "$1" in 
@@ -35,7 +35,7 @@ done
 LABEL=$1
 
 if [[ -z "$LABEL" ]]; then
-    echo "You must provide a label for the image"
+    echo 'You must provide a label for the image'
     exit 1
 fi
 

test

@@ -12,8 +12,8 @@ Options:
 EOF
 }
 
-IMAGE_TAG="kaggle/python-build"
-ADDITONAL_OPTS=""
+IMAGE_TAG='kaggle/python-build'
+ADDITONAL_OPTS=''
 
 while :; do
     case "$1" in 
@@ -22,8 +22,8 @@ while :; do
             exit
             ;;
         -g|--gpu)
-            IMAGE_TAG="kaggle/python-gpu-build"
-            ADDITONAL_OPTS="-v /tmp/empty_dir:/usr/local/cuda/lib64/stubs:ro"
+            IMAGE_TAG='kaggle/python-gpu-build'
+            ADDITONAL_OPTS='-v /tmp/empty_dir:/usr/local/cuda/lib64/stubs:ro'
             ;;
         -?*)
             usage