chore(ci): add Operator SDK into e2e-runner image (#2460)

* chore(ci): add Operator SDK into e2e-runner image

* Add `gettext` for `envsubst`

Author: zdrapela

.ibm/images/Dockerfile

@@ -20,6 +20,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     make gcc g++ python3 rsync sshpass \
     nodejs \
     openssl libssl-dev ca-certificates \
+    apache2-utils \
+    gettext \
     curl wget jq colorized-logs && \
     npm install -g typescript yarn@latest && \
     apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
@@ -70,5 +72,11 @@ RUN curl -LO "https://github.com/operator-framework/operator-registry/releases/d
     chmod +x linux-amd64-opm && \
     mv linux-amd64-opm /usr/local/bin/opm
 
-# Set working directory    
+# Install Operator SDK CLI (required to install OLM on K8s clusters)
+RUN export ARCH=$(case $(uname -m) in x86_64) echo -n amd64 ;; aarch64) echo -n arm64 ;; *) echo -n $(uname -m) ;; esac) && \
+    export OS=$(uname | awk '{print tolower($0)}') && \
+    curl -LO "https://github.com/operator-framework/operator-sdk/releases/download/v1.39.1/operator-sdk_${OS}_${ARCH}" && \
+    chmod +x operator-sdk_${OS}_${ARCH} && mv operator-sdk_${OS}_${ARCH} /usr/local/bin/operator-sdk
+
+# Set working directory
 WORKDIR /tmp/