install websocat in image

.github/workflows/test.yaml

@@ -33,13 +33,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install test requirement (websocat)
-        run: |
-          wget -q https://github.com/vi/websocat/releases/download/v1.12.0/websocat.x86_64-unknown-linux-musl \
-            -O /usr/local/bin/websocat
-          chmod +x /usr/local/bin/websocat
-          websocat --help=long
-
       - name: Build image
         run: |
           docker build --progress=plain --build-arg vncserver=${{ matrix.vncserver }} -t test .
@@ -80,6 +73,14 @@ jobs:
           container_id=$(docker run -d -it -p 5901:5901 test websockify --verbose --log-file=/tmp/websockify.log --heartbeat=30 5901 -- vncserver -xstartup /opt/install/jupyter_remote_desktop_proxy/share/xstartup -verbose -fg -geometry 1680x1050 -SecurityTypes None -rfbport 5901)
           sleep 1
 
+          echo "::group::Install websocat, a test dependency"
+          docker exec --user root $container_id bash -c '
+              wget -q https://github.com/vi/websocat/releases/download/v1.12.0/websocat.x86_64-unknown-linux-musl \
+                  -O /usr/local/bin/websocat
+              chmod +x /usr/local/bin/websocat
+          '
+          echo "::endgroup::"
+
           docker exec -it $container_id websocat --binary --one-message --exit-on-eof "ws://localhost:5901/" 2>&1 | tee -a /dev/stderr | \
               grep --quiet RFB && echo "Passed test" || { echo "Failed test" && TEST_OK=false; }
 
@@ -106,9 +107,18 @@ jobs:
           curl --silent --fail 'http://localhost:8888/desktop/?token=secret' | grep --quiet 'Jupyter Remote Desktop Proxy' && echo "Passed get index.html test" || { echo "Failed get index.html test" && TEST_OK=false; }
           curl --silent --fail 'http://localhost:8888/desktop/static/dist/viewer.js?token=secret' > /dev/null && echo "Passed get viewer.js test" || { echo "Failed get viewer.js test" && TEST_OK=false; }
 
-          websocat --binary --one-message --exit-on-eof 'ws://localhost:8888/desktop-websockify/?token=secret' | \
-              grep --quiet RFB && echo "Passed initial websocket test" || { \
-                  echo "Failed initial websocket test" && sleep 1 && websocat --binary --one-message --exit-on-eof 'ws://localhost:8888/desktop-websockify/?token=secret' | grep --quiet RFB && echo "Passed second websocket test" || { echo "Failed second websocket test" && TEST_OK=false; } \
+          websocat --binary --one-message --exit-on-eof 'ws://localhost:8888/desktop-websockify/?token=secret' 2>&1 \
+            | tee -a /dev/stderr \
+            | grep --quiet RFB \
+           && echo "Passed initial websocket test" \
+           || { \
+                  echo "Failed initial websocket test" \
+               && sleep 1 \
+               && websocat --binary --one-message --exit-on-eof 'ws://localhost:8888/desktop-websockify/?token=secret' 2>&1 \
+                    | tee -a /dev/stderr \
+                    | grep --quiet RFB \
+                  && echo "Passed second websocket test" \
+                  || { echo "Failed second websocket test" && TEST_OK=false; } \
               }
 
           echo "::group::jupyter_server logs"

Dockerfile

@@ -23,10 +23,6 @@ RUN apt-get -y -qq update \
  && chown -R $NB_UID:$NB_GID $HOME /opt/install \
  && rm -rf /var/lib/apt/lists/*
 
-RUN wget -q https://github.com/vi/websocat/releases/download/v1.12.0/websocat.x86_64-unknown-linux-musl \
-        -O /usr/local/bin/websocat \
- && chmod +x /usr/local/bin/websocat
-
 # Install a VNC server, either TigerVNC (default) or TurboVNC
 ARG vncserver=tigervnc
 RUN if [ "${vncserver}" = "tigervnc" ]; then \