feat: migrate to zsh from bash

.devcontainer/Dockerfile

@@ -42,12 +42,12 @@ RUN curl -Lo /usr/local/bin/kubectl https://dl.k8s.io/release/v${VERSION_KUBECTL
     && tar -xvf helm.tar.gz \
     && mv linux-amd64/helm /usr/local/bin \
     && rm -rf linux-amd64 helm.tar.gz \
-    && curl -s https://raw.githubusercontent.com/k3d-io/k3d/main/install.sh | TAG=v${VERSION_K3D} bash
+    && curl -s https://raw.githubusercontent.com/k3d-io/k3d/main/install.sh | TAG=v${VERSION_K3D} zsh
 
 
 ENV CLOUDSDK_COMPONENT_MANAGER_FIXED_SDK_VERSION=${VERSION_GCLOUD_SDK}
 # Below includes cleanup to save space after the gcloud install: https://stackoverflow.com/questions/60827959/how-to-stop-gcloud-component-update-from-keeping-a-backup
-RUN curl -sSL https://sdk.cloud.google.com | bash \
+RUN curl -sSL https://sdk.cloud.google.com | zsh \
     && export PATH=$PATH:/usr/local/gcloud/google-cloud-sdk/bin \
     && gcloud components install gke-gcloud-auth-plugin --quiet \
     && gcloud components install alpha --quiet \

.devcontainer/tools/add-tools-to-shells.sh

@@ -1,9 +1,7 @@
-#!/bin/bash
+#!/bin/zsh
 
 add_tools_to_shells() {
     if [ -f "/home/vscode/.bashrc" ]; then
-        find /etc/tools/ -type f ! -name "add-tools-to-shells.sh" ! -name "helm-repositories.yaml" \
-            -exec sh -c 'echo >> /home/vscode/.bashrc; cat "{}" >> /home/vscode/.bashrc' \;
         echo "zsh" >> /home/vscode/.bashrc
     fi
 

.devcontainer/tools/cordon-drain-nodes-older-than-minutes.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/zsh
 
 cordon-drain-nodes-older-than-minutes() {
     threshold_minutes=""

.devcontainer/tools/create-ghcr-regcred.sh

@@ -1,3 +1,5 @@
+#!/bin/zsh
+
 create-ghcr-regcred() {
     gh_username=""
     gh_token=""
@@ -40,7 +42,6 @@ create-ghcr-regcred() {
         return
     fi
 
-    set -e
     b64_enc_regcred=$(echo -n "$gh_username:$gh_token" | base64)
 
     echo "{\"auths\":{\"ghcr.io\":{\"auth\":\"$b64_enc_regcred\"}}}"

.devcontainer/tools/glueops-fetch-repos.sh

@@ -1,3 +1,5 @@
+#!/bin/zsh
+
 glueops-fetch-repos() {
     #https://stackoverflow.com/a/68770988/4620962
 

.devcontainer/tools/run-gha.sh

@@ -1,3 +1,5 @@
+#!/bin/zsh
+
 run-gha() {
     #https://stackoverflow.com/questions/6245570/how-do-i-get-the-current-branch-name-in-git
     gh workflow run --ref=$(git rev-parse --abbrev-ref HEAD)

.devcontainer/tools/yolo.sh

@@ -1,3 +1,5 @@
+#!/bin/zsh
+
 yolo() {
     # Always unset GITHUB_TOKEN
     unset GITHUB_TOKEN