diff --git a/.circleci/config.yml b/.circleci/config.yml
index f67248cb..fb038c21 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -52,7 +52,7 @@ jobs:
           name: Pull Deps
           command: |
             source ${INIT_ENV}
-            ./src/CARMAAvtVimbaDriver/docker/checkout.sh -r ${PWD}
+            ./src/CARMAAvtVimbaDriver/docker/checkout.bash -r ${PWD}
       - run:
           name: Build Driver
           command: |
diff --git a/Dockerfile b/Dockerfile
index 3b6e5709..ca36df31 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ FROM usdotfhwastol/carma-base:3.7.0 as setup
 
 RUN mkdir ~/src
 COPY --chown=carma . /home/carma/src/CARMAAvtVimbaDriver
-RUN ~/src/CARMAAvtVimbaDriver/docker/checkout.sh
+RUN ~/src/CARMAAvtVimbaDriver/docker/checkout.bash
 RUN ~/src/CARMAAvtVimbaDriver/docker/install.sh
 
 FROM usdotfhwastol/carma-base:3.7.0
diff --git a/docker/build-image.sh b/docker/build-image.sh
index 688e8ec1..03f8c984 100755
--- a/docker/build-image.sh
+++ b/docker/build-image.sh
@@ -56,7 +56,7 @@ echo "Final image name: $USERNAME/$IMAGE:$COMPONENT_VERSION_STRING"
 
 cd ..
 if [[ $COMPONENT_VERSION_STRING = "test" ]]; then
-    sed "s|usdotfhwastol|$USERNAME|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:$COMPONENT_VERSION_STRING|g; s|checkout.sh|checkout.sh -d|g" \
+    sed "s|usdotfhwastol|$USERNAME|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:$COMPONENT_VERSION_STRING|g; s|checkout.bash|checkout.bash -d|g" \
         Dockerfile | docker build -f - --no-cache -t $USERNAME/$IMAGE:$COMPONENT_VERSION_STRING \
         --build-arg VERSION="$COMPONENT_VERSION_STRING" \
         --build-arg VCS_REF=`git rev-parse --short HEAD` \
diff --git a/docker/checkout.sh b/docker/checkout.bash
similarity index 100%
rename from docker/checkout.sh
rename to docker/checkout.bash
diff --git a/docker/system_release.sh b/docker/system_release.sh
index 83d72b0e..cf489a2d 100755
--- a/docker/system_release.sh
+++ b/docker/system_release.sh
@@ -15,7 +15,7 @@
 #  the License.
 
 # This script takes a system release name and version number as arguments, and 
-# updates version dependencies in Dockerfile and /docker/checkout.sh accordingly.
+# updates version dependencies in Dockerfile and /docker/checkout.bash accordingly.
 
 # The -u | --unprompted option can be used to skip the interactive prompts, and
 # provide arguments directly from the commandline.
@@ -47,19 +47,22 @@ if git ls-remote -q | grep $RELEASE_BRANCH; then
     echo "Checking out $RELEASE_BRANCH branch."
     git checkout $RELEASE_BRANCH
 
-    echo "Updating checkout.sh to point to system release version."
-    sed -i "s|CARMA[a-zA-Z]*_[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g; s|carma-[a-zA-Z]*-[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g" docker/checkout.sh
+    echo "Updating .circleci/config.yml base image."
+    sed -i "s|carma-base:.*|carma-base:$SYSTEM_RELEASE|g" .circleci/config.yml
+
+    echo "Updating checkout.bash to point to system release version."
+    sed -i "s|CARMA[a-zA-Z]*_[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g; s|carma-[a-zA-Z]*-[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g" docker/checkout.bash
 
     echo "Updating Dockerfile to point to system release version."
     sed -i "s|:CARMASystem_[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g; s|:carma-system-[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g" Dockerfile
 
-    git add docker/checkout.sh Dockerfile
+    git add docker/checkout.bash Dockerfile
 
     git commit -m "Updated dependencies for $SYSTEM_RELEASE"
 
     git tag -a $SYSTEM_RELEASE -m "$SYSTEM_RELEASE version tag."
 
-    echo "Dockerfile and checkout.sh updated, committed, and tagged."
+    echo "Dockerfile and checkout.bash updated, committed, and tagged."
 else
     echo "$RELEASE_BRANCH does not exist. Exiting script."
     exit 0
diff --git a/hooks/pre_build b/hooks/pre_build
index 30bbb8af..45bff830 100644
--- a/hooks/pre_build
+++ b/hooks/pre_build
@@ -1,7 +1,13 @@
 #!/bin/bash
 
 if [[ "$SOURCE_BRANCH" = "develop" ]]; then
-    # add -t flag to checkout.sh and update image dependencies
-    sed -i "s|/checkout.sh|/checkout.sh -d|g; s|usdotfhwastol|usdotfhwastoldev|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:develop|g" \
+    # add -t flag to checkout.bash and update image dependencies
+    sed -i "s|/checkout.bash|/checkout.bash -d|g; s|usdotfhwastol|usdotfhwastoldev|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:develop|g" \
         Dockerfile
+elif [[ "$SOURCE_BRANCH" =~ ^release/.*$ ]]; then
+    # swap checkout branch in checkout.bash to release branch
+    sed -i "s|usdotfhwastol|usdotfhwastolcandidate|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:candidate|g; s|CARMA[a-zA-Z]*_[0-9]*\.[0-9]*\.[0-9]*|candidate|g; s|carma-[a-zA-Z]*-[0-9]*\.[0-9]*\.[0-9]*|candidate|g" \
+        Dockerfile
+    sed -i "s|CARMA[a-zA-Z]*_[0-9]*\.[0-9]*\.[0-9]*|$SOURCE_BRANCH|g; s|carma-[a-zA-Z]*-[0-9]*\.[0-9]*\.[0-9]*|$SOURCE_BRANCH|g" \
+        docker/checkout.bash
 fi
\ No newline at end of file