feat(localnet): Add --no-explorer flag and reduce size

.github/workflows/ci-benchmarks.yml

@@ -44,6 +44,7 @@ jobs:
       SAPPHIRE_PARATIME: ${{ github.workspace }}/oasis_core/sapphire-paratime
       OASIS_NODE_DATADIR: /tmp/oasis-sapphire-benchmarks
       OASIS_WEB3_GATEWAY: ${{ github.workspace }}/oasis-web3-gateway
+      OASIS_DOCKER_START_EXPLORER: no
     timeout-minutes: 30
     steps:
       - name: Checkout code

.github/workflows/ci-test.yaml

@@ -42,6 +42,7 @@ jobs:
       GATEWAY__CHAIN_ID: 42260
       EMERALD_PARATIME: ${{ github.workspace }}/oasis_core/emerald-paratime
       OASIS_NODE_DATADIR: /tmp/eth-runtime-test
+      OASIS_DOCKER_START_EXPLORER: no
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -116,6 +117,7 @@ jobs:
       KEYMANAGER_ARTIFACT_URL: https://buildkite.com/organizations/oasisprotocol/pipelines/oasis-core-ci/builds/14038/jobs/0191c151-b95b-402c-9854-4e58effc95ab/artifacts/0191c156-f366-45b2-819b-e1eb9fd9ba16 # Find this at https://buildkite.com/oasisprotocol/oasis-core-ci/builds?branch=stable%2F<...> under "Build runtimes": simple-keymanager.mocksgx.
       KEYMANAGER_BINARY: ${{ github.workspace }}/oasis_core/simple-keymanager
       OASIS_NODE_DATADIR: /tmp/eth-runtime-test
+      OASIS_DOCKER_START_EXPLORER: no
     steps:
       - name: Checkout code
         uses: actions/checkout@v4

docker/README.md

@@ -64,6 +64,10 @@ be funded 10,000 TEST. Flags `-amount`, `-to`, `-n` can be added to specify an
 initial ROSE deposit, existing mnemonic and the number of addresses to derive
 and fund respectively.
 
+By passing `--no-explorer`, the Explorer frontend and Nexus indexer won't be
+started (useful if you want to reduce the container startup time a bit,
+e.g. for CI tests).
+
 WARNING: The image is running in *ephemeral mode*. A new chain state will be
 initialized each time you start the container!
 

docker/common/start.sh

@@ -18,6 +18,8 @@
 
 rm -f /CONTAINER_READY
 
+export OASIS_DOCKER_START_EXPLORER=${OASIS_DOCKER_START_EXPLORER:-yes}
+
 export OASIS_DOCKER_NO_GATEWAY=${OASIS_DOCKER_NO_GATEWAY:-no}
 
 export OASIS_NODE_LOG_LEVEL=${OASIS_NODE_LOG_LEVEL:-warn}
@@ -148,6 +150,11 @@ while [[ $# -gt 0 ]]; do
       shift
       shift
       ;;
+    --no-explorer)
+      # Don't start explorer and indexer.
+      OASIS_DOCKER_START_EXPLORER="no"
+      shift
+      ;;
     *)
       echo "Unknown argument: $1"
       exit 1;
@@ -351,35 +358,37 @@ else
   sleep 10
 fi
 
-# Once everything is initialized and setup, start Nexus and Explorer.
-if [ ! -z "${OASIS_NEXUS_BINARY:-}" ]; then
-  notice "Creating database 'nexus'\n"
-  su -c "createdb -h 127.0.0.1 -p 5432 -U postgres nexus" postgres
+# Once everything is initialized and setup, start Nexus and Explorer if enabled.
+if [[ "${OASIS_DOCKER_START_EXPLORER}" == "yes" ]]; then
+  if [ ! -z "${OASIS_NEXUS_BINARY:-}" ]; then
+    notice "Creating database 'nexus'\n"
+    su -c "createdb -h 127.0.0.1 -p 5432 -U postgres nexus" postgres
 
-  notice "Waiting for Nexus to start"
-  # Configure Nexus config file.
-  chain_context=$(${OASIS_NODE_BINARY} control status -a unix:${OASIS_NODE_SOCKET} | jq -r .consensus.chain_context)
-  sed -i 's/{{CHAIN_CONTEXT}}/'"${chain_context}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
-  sed -i 's/{{LOG_LEVEL}}/'"${OASIS_NODE_LOG_LEVEL}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
-  sed -i 's/{{PARATIME_NAME}}/'"${PARATIME_NAME}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
+    notice "Waiting for Nexus to start"
+    # Configure Nexus config file.
+    chain_context=$(${OASIS_NODE_BINARY} control status -a unix:${OASIS_NODE_SOCKET} | jq -r .consensus.chain_context)
+    sed -i 's/{{CHAIN_CONTEXT}}/'"${chain_context}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
+    sed -i 's/{{LOG_LEVEL}}/'"${OASIS_NODE_LOG_LEVEL}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
+    sed -i 's/{{PARATIME_NAME}}/'"${PARATIME_NAME}"'/g' ${OASIS_NEXUS_CONFIG_FILE}
 
-  ${OASIS_NEXUS_BINARY} --config ${OASIS_NEXUS_CONFIG_FILE} 2>1 &>/var/log/nexus.log &
-  NEXUS_PID=$!
+    ${OASIS_NEXUS_BINARY} --config ${OASIS_NEXUS_CONFIG_FILE} 2>1 &>/var/log/nexus.log &
+    NEXUS_PID=$!
 
-  # Wait for Oasis Nexus to start.
-  while ! curl -s http://localhost:8547/ 2>1 &>/dev/null; do echo -n .; sleep 1; done
-  echo
-fi
+    # Wait for Oasis Nexus to start.
+    while ! curl -s http://localhost:8547/ 2>1 &>/dev/null; do echo -n .; sleep 1; done
+    echo
+  fi
 
-if [ ! -z "${OASIS_EXPLORER_DIR:-}" ]; then
-  notice "Waiting for Explorer to start"
-  cd ${OASIS_EXPLORER_DIR}
-  serve -s ${OASIS_EXPLORER_DIR} -l ${EXPLORER_PORT} > /var/log/explorer.log 2>&1 &
-  EXPLORER_PID=$!
+  if [ ! -z "${OASIS_EXPLORER_DIR:-}" ]; then
+    notice "Waiting for Explorer to start"
+    cd ${OASIS_EXPLORER_DIR}
+    serve -s ${OASIS_EXPLORER_DIR} -l ${EXPLORER_PORT} > /var/log/explorer.log 2>&1 &
+    EXPLORER_PID=$!
 
-  # Wait for Explorer to start.
-  while ! curl -s http://localhost:${EXPLORER_PORT}/ 2>1 &>/dev/null; do echo -n .; sleep 1; done
-  echo
+    # Wait for Explorer to start.
+    while ! curl -s http://localhost:${EXPLORER_PORT}/ 2>1 &>/dev/null; do echo -n .; sleep 1; done
+    echo
+  fi
 fi
 
 # Add Localnet to Oasis CLI and make it default.

docker/emerald-localnet/Dockerfile

@@ -34,7 +34,7 @@ RUN wget https://github.com/oasisprotocol/nexus/releases/download/v${NEXUS_VERSI
 # TODO: update once some support for localnet is added: https://github.com/oasisprotocol/explorer/issues/1597
 ARG EXPLORER_REPO=https://github.com/oasisprotocol/explorer.git
 ARG EXPLORER_VERSION=bcb125108db2f6439fcdd536f690b0edfd38aad7
-COPY docker/common/explorer.env /nexus.env.production
+COPY docker/common/nexus.env.production /nexus.env.production
 RUN git clone ${EXPLORER_REPO} explorer --depth 1 \
     && cd explorer \
     && git fetch origin ${EXPLORER_VERSION} --depth 1 \