refactor: update Dockerfile base image to Rocky Linux and remove obsolete workflow

Signed-off-by: Stephen Simpson <ssimpson89@users.noreply.github.com>

Dockerfile

@@ -1,20 +1,17 @@
-FROM alpine:latest
+FROM rockylinux:9
 
-RUN apk add --no-cache wget ca-certificates tar
+RUN dnf update -y && \
+    dnf install -y \
+    iputils \
+    iproute \
+    iperf3 \
+    net-tools \
+    procps-ng \
+    wget \
+    which \
+    vim \
+    python3-pip && \
+    dnf group install -y "Development Tools" && \
+    dnf clean all
 
-ARG TARGETARCH
-
-RUN if [ "$TARGETARCH" = "amd64" ]; then \
-    ARCH="x86_64"; \
-    elif [ "$TARGETARCH" = "arm64" ]; then \
-    ARCH="aarch64"; \
-    fi && \
-    wget -q https://install.speedtest.net/app/cli/ookla-speedtest-1.2.0-linux-${ARCH}.tgz && \
-    tar -xzf ookla-speedtest-1.2.0-linux-${ARCH}.tgz -C /usr/bin && \
-    rm ookla-speedtest-1.2.0-linux-${ARCH}.tgz && \
-    chmod +x /usr/bin/speedtest
-
-COPY entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
-
-ENTRYPOINT ["/entrypoint.sh"]
+CMD ["/bin/bash"]