Install python-is-python3 so that python will point to python3 (#2036)

bin/prepare_test_environment.sh

@@ -47,6 +47,6 @@ EOF
 
 if [ "$START_SERVER" = true ]; then
     cd /usr/src/app
-    python3 server.py &
+    python server.py &
     sleep 3
 fi

bin/start_server.sh

@@ -23,10 +23,10 @@ if [ -n "${MANAGEMENT_USER+x}" ] && [ -n "${MANAGEMENT_PASSWORD+x}" ]; then
 fi
 
 echo "Running migration..."
-python3 ./bin/migrate.py
+python ./bin/migrate.py
 
 if [[ "$ENVIRONMENT" == "development" ]]; then
     flask --app server.py run --debug --reload --host 0.0.0.0 --port 8080
 else
-    python3 server.py
+    python server.py
 fi

bin/start_viewer.sh

@@ -39,7 +39,7 @@ trap '' 16
 echo 0 >  /sys/fs/cgroup/memory/memory.swappiness
 
 # Start viewer
-sudo -E -u viewer dbus-run-session python3 viewer.py &
+sudo -E -u viewer dbus-run-session python viewer.py &
 
 # Wait for the viewer
 while true; do

bin/start_wifi_connect.sh

@@ -31,7 +31,7 @@ while [[ true ]]; do
         echo "Skipping setting up Wifi-Connect Access Point."
 
         if [[ "$IS_CONNECTED" = 'false' ]]; then
-            python3 send_zmq_message.py --action='show_splash'
+            python send_zmq_message.py --action='show_splash'
         fi
 
         exit 0
@@ -41,7 +41,7 @@ while [[ true ]]; do
         echo "Connect to the Access Point and configure the SSID and Passphrase for the network to connect to."
 
         if [[ "$IS_CONNECTED" = '' ]]; then
-            python3 send_zmq_message.py --action='setup_wifi'
+            python send_zmq_message.py --action='setup_wifi'
         fi
 
         IS_CONNECTED='false'

docker/Dockerfile.base.tmpl

@@ -32,6 +32,7 @@ RUN --mount=type=cache,target=/var/cache/apt \
         python3-pip \
         python3-setuptools \
         python3-simplejson \
+        python-is-python3 \
         sqlite3
 
 # Works around issue with `curl`

docker/Dockerfile.viewer.tmpl

@@ -103,6 +103,7 @@ RUN --mount=type=cache,target=/var/cache/apt \
         python3-netifaces \
         python3-pip \
         python3-setuptools \
+        python-is-python3 \
         ttf-wqy-zenhei \
         vlc \
         sqlite3

docker/Dockerfile.websocket.tmpl

@@ -12,4 +12,4 @@ ENV GIT_HASH=$GIT_HASH
 ENV GIT_SHORT_HASH=$GIT_SHORT_HASH
 ENV GIT_BRANCH=$GIT_BRANCH
 
-CMD ["python3", "websocket_server_layer.py"]
+CMD ["python", "websocket_server_layer.py"]