Embed entrypoint in docker image (#210)

* Embed entrypoint in docker image

* Pin snitch_cluster fork commit

snitch/docker/Dockerfile

@@ -2,7 +2,8 @@ FROM ghcr.io/pulp-platform/snitch_cluster@sha256:9978f9d0e3e6b7ad1b2c1f0eb628a11
 
 RUN git clone --recursive https://github.com/nazavode/snitch_cluster.git /src \
  && cd /src \
- && git checkout nazavode/xdsl-ci \
+ && git reset --hard 6c63f4c65d115ce16193f4f9a030ac08416a4acf \
+ && git submodule update \
  # verilator model
  && cd /src/target/snitch_cluster \
  && make CFG_OVERRIDE=cfg/fdiv.hjson bin/snitch_cluster.vlt \
@@ -102,4 +103,5 @@ deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-16 main\n" >> /etc/apt
 # Make our own python3.11 available for current $USER:
 ENV PATH "/opt/python3.11/bin:${PATH}"
 
-ENTRYPOINT ["/src/snitch/docker/entrypoint.sh"]
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

snitch/docker/entrypoint.sh

@@ -1,20 +1,23 @@
-#!/bin/bash
+#!/usr/bin/env bash
+
+set -euo pipefail
 
 VENV_DIR=venv_docker
 FORCE_VENV=0
 
-pushd /src/xdsl > /dev/null
-
-if [[ 1 -eq ${FORCE_VENV} ]] || [[ ! -d ${VENV_DIR} ]] || [[ ! -f ${VENV_DIR}/bin/activate ]]; then
-  python3 -m venv ${VENV_DIR}
-  source ${VENV_DIR}/bin/activate
-
-  pip install -e .
-  pip install pandas
-else
-  source ${VENV_DIR}/bin/activate
+# This entrypoint expects the source repo to be mounted at /src,
+# if this is not the case, just skip xdsl virtualenv creation.
+if [[ -d /src/xdsl ]]; then
+  pushd /src/xdsl > /dev/null
+  if [[ 1 -eq ${FORCE_VENV} ]] || [[ ! -d ${VENV_DIR} ]] || [[ ! -f ${VENV_DIR}/bin/activate ]]; then
+    python3 -m venv ${VENV_DIR}
+    source ${VENV_DIR}/bin/activate
+    pip install -e .
+    pip install pandas
+  else
+    source ${VENV_DIR}/bin/activate
+  fi
+  popd
 fi
 
-popd
-
 exec "$@"