docs: improve structure for example templates (#9842)

Co-authored-by: Kyle Carberry <kyle@carberry.com>
Co-authored-by: Muhammad Atif Ali <atif@coder.com>
Co-authored-by: Muhammad Atif Ali <me@matifali.dev>

examples/jfrog/docker/build/Dockerfile

@@ -0,0 +1,28 @@
+FROM ubuntu
+
+RUN apt-get update \
+	&& apt-get install -y \
+	curl \
+	git \
+	python3-pip \
+	sudo \
+	vim \
+	wget \
+	npm \
+	&& rm -rf /var/lib/apt/lists/*
+
+ARG GO_VERSION=1.20.8
+RUN mkdir --parents /usr/local/go && curl --silent --show-error --location \
+	"https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" -o /usr/local/go.tar.gz && \
+	tar --extract --gzip --directory=/usr/local/go --file=/usr/local/go.tar.gz --strip-components=1
+
+ENV PATH=$PATH:/usr/local/go/bin
+
+ARG USER=coder
+RUN useradd --groups sudo --no-create-home --shell /bin/bash ${USER} \
+	&& echo "${USER} ALL=(ALL) NOPASSWD:ALL" >/etc/sudoers.d/${USER} \
+	&& chmod 0440 /etc/sudoers.d/${USER}
+RUN curl -fL https://install-cli.jfrog.io | sh
+RUN chmod 755 $(which jf)
+USER ${USER}
+WORKDIR /home/${USER}