feat: remove docker from runner image

Dockerfile

@@ -78,22 +78,13 @@ RUN apt-get update && apt-get -y install helm
 
 RUN curl -O https://downloads.mongodb.com/compass/mongodb-mongosh_1.6.1_amd64.deb
 RUN apt-get install -y ./mongodb-mongosh_1.6.1_amd64.deb
-
-# install Docker from https://docs.docker.com/engine/install/ubuntu/
-
-RUN mkdir -p /etc/apt/keyrings && curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
-RUN echo \
-  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
-  $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
-RUN apt-get update && apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
+RUN rm ./mongodb-mongosh_1.6.1_amd64.deb
 
 RUN useradd github && \
     mkdir -p /home/github && \
     chown -R github:github /home/github && \
     chown -R github:github /actions-runner
 
-RUN usermod -aG docker github
-
 WORKDIR /home/github
 
 COPY entrypoint.sh ./entrypoint.sh