Use new ENV syntax in Dockerfile

.devcontainer/Dockerfile

@@ -22,7 +22,7 @@ LABEL org.opencontainers.image.source https://github.com/project-chip/connectedh
 ARG USERNAME=vscode
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
-ENV LANG en_US.utf8
+ENV LANG=en_US.utf8
 
 
 # These are installed for terminal/dev convenience. If more tooling for build is required, please
@@ -81,17 +81,17 @@ RUN sed -i '/^TIZEN_SDK_DATA_PATH/d' $TIZEN_SDK_ROOT/sdk.info \
     && ln -sf /home/$USERNAME/.tizen-cli-config $TIZEN_SDK_ROOT/tools/.tizen-cli-config \
     && : # last line
 
-ENV TIZEN_ROOTFS /tizen_rootfs
+ENV TIZEN_ROOTFS=/tizen_rootfs
 
 # Fast Model GDB plugins path for debugging support
-ENV FAST_MODEL_PLUGINS_PATH /opt/FastModelsPortfolio_11.16/plugins/Linux64_GCC-9.3
+ENV FAST_MODEL_PLUGINS_PATH=/opt/FastModelsPortfolio_11.16/plugins/Linux64_GCC-9.3
 
 # Set up ccache as a pigweed command launcher when using the scripts/build/build_examples.py
 # script. Also, set up icecc as the command prefix for ccache. Such setup allows to benefit
 # from compilation caching and distributed compilation at the same time.
 #
 # NOTE: In order to use distributed compilation with icecc, one should run
 #       "scripts/icecc.sh start" before starting the build.
-ENV CHIP_PW_COMMAND_LAUNCHER ccache
-ENV CCACHE_PREFIX icecc
-ENV PATH /usr/lib/ccache:$PATH
+ENV CHIP_PW_COMMAND_LAUNCHER=ccache
+ENV CCACHE_PREFIX=icecc
+ENV PATH=/usr/lib/ccache:$PATH

integrations/docker/images/stage-2/chip-build-java/Dockerfile

@@ -19,5 +19,5 @@ RUN set -x \
     && rm -f kotlinc/bin/*.bat \
     && : # last line
 
-ENV PATH $PATH:/usr/lib/kotlinc/bin
+ENV PATH=$PATH:/usr/lib/kotlinc/bin
 ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

integrations/docker/images/stage-2/chip-build-tizen/Dockerfile

@@ -20,8 +20,8 @@ RUN set -x \
 
 # ------------------------------------------------------------------------------
 # Install tizen
-ENV TIZEN_VERSION 8.0
-ENV TIZEN_SDK_ROOT /opt/tizen-sdk
+ENV TIZEN_VERSION=8.0
+ENV TIZEN_SDK_ROOT=/opt/tizen-sdk
 
 COPY tizen-sdk-installer $TIZEN_SDK_ROOT/files/installer
 RUN set -x \
@@ -34,8 +34,8 @@ RUN set -x \
 
 # ------------------------------------------------------------------------------
 # Set environment
-ENV TIZEN_SDK_TOOLCHAIN $TIZEN_SDK_ROOT/tools/arm-linux-gnueabi-gcc-9.2
-ENV TIZEN_SDK_SYSROOT $TIZEN_SDK_ROOT/platforms/tizen-$TIZEN_VERSION/tizen/rootstraps/tizen-$TIZEN_VERSION-device.core
+ENV TIZEN_SDK_TOOLCHAIN=$TIZEN_SDK_ROOT/tools/arm-linux-gnueabi-gcc-9.2
+ENV TIZEN_SDK_SYSROOT=$TIZEN_SDK_ROOT/platforms/tizen-$TIZEN_VERSION/tizen/rootstraps/tizen-$TIZEN_VERSION-device.core
 ENV PATH="$TIZEN_SDK_TOOLCHAIN/bin:$TIZEN_SDK_ROOT/tools/ide/bin:$TIZEN_SDK_ROOT/tools:$PATH"
 
 # ------------------------------------------------------------------------------

integrations/docker/images/stage-2/chip-cirque-device-base/Dockerfile

@@ -2,9 +2,9 @@ FROM ubuntu:24.04
 
 ARG OT_BR_POSIX_CHECKOUT=main
 
-ENV DEBIAN_FRONTEND noninteractive
-ENV PLATFORM ubuntu
-ENV DOCKER 1
+ENV DEBIAN_FRONTEND=noninteractive
+ENV PLATFORM=ubuntu
+ENV DOCKER=1
 ENV OT_BR_POSIX_CHECKOUT=${OT_BR_POSIX_CHECKOUT}
 
 RUN mkdir /app

integrations/docker/images/stage-3/chip-build-tizen-qemu/Dockerfile

@@ -2,9 +2,9 @@ ARG VERSION=1
 FROM ghcr.io/project-chip/chip-build-tizen:${VERSION}
 LABEL org.opencontainers.image.source https://github.com/project-chip/connectedhomeip
 
-ENV TIZEN_IOT_QEMU_KERNEL $TIZEN_SDK_ROOT/iot-qemu-virt-zImage
-ENV TIZEN_IOT_IMAGE_ROOT $TIZEN_SDK_ROOT/iot-rootfs.img
-ENV TIZEN_IOT_IMAGE_DATA $TIZEN_SDK_ROOT/iot-sysdata.img
+ENV TIZEN_IOT_QEMU_KERNEL=$TIZEN_SDK_ROOT/iot-qemu-virt-zImage
+ENV TIZEN_IOT_IMAGE_ROOT=$TIZEN_SDK_ROOT/iot-rootfs.img
+ENV TIZEN_IOT_IMAGE_DATA=$TIZEN_SDK_ROOT/iot-sysdata.img
 
 # ------------------------------------------------------------------------------
 # Switch to the root user so we could install things

integrations/docker/images/vscode/chip-build-vscode/Dockerfile

@@ -104,7 +104,7 @@ RUN set -x \
     && rm -rf /var/lib/apt/lists/ \
     && : # last line
 
-ENV PATH $PATH:/usr/lib/kotlinc/bin
+ENV PATH=$PATH:/usr/lib/kotlinc/bin
 ENV AMEBA_PATH=/opt/ameba/ambd_sdk_with_chip_non_NDA
 ENV ANDROID_HOME=/opt/android/sdk
 ENV ANDROID_NDK_HOME=/opt/android/android-ndk-r23c
@@ -113,7 +113,7 @@ ENV SILABS_BOARD=BRD4186C
 # Keep GSDK_ROOT name until rename transition to SISDK is completed
 ENV GSDK_ROOT=/opt/silabs/simplicity_sdk/
 ENV SISDK_ROOT=/opt/silabs/simplicity_sdk/
-ENV PATH $PATH:/opt/silabs/slc_cli/
+ENV PATH=$PATH:/opt/silabs/slc_cli/
 ENV WISECONNECT_SDK_ROOT=/opt/silabs/wiseconnect-wifi-bt-sdk/
 ENV WIFI_SDK_ROOT=/opt/silabs/wifi_sdk
 ENV IDF_PATH=/opt/espressif/esp-idf/
@@ -140,10 +140,10 @@ ENV NXP_SDK_PATH=/opt/nxp
 # NOTE: This directory is NOT persistent.
 ENV PW_ENVIRONMENT_ROOT=/home/vscode/pigweed/env
 
-ENV TIZEN_VERSION 8.0
-ENV TIZEN_SDK_ROOT /opt/tizen-sdk
-ENV TIZEN_SDK_TOOLCHAIN $TIZEN_SDK_ROOT/tools/arm-linux-gnueabi-gcc-9.2
-ENV TIZEN_SDK_SYSROOT $TIZEN_SDK_ROOT/platforms/tizen-$TIZEN_VERSION/tizen/rootstraps/tizen-$TIZEN_VERSION-device.core
+ENV TIZEN_VERSION=8.0
+ENV TIZEN_SDK_ROOT=/opt/tizen-sdk
+ENV TIZEN_SDK_TOOLCHAIN=$TIZEN_SDK_ROOT/tools/arm-linux-gnueabi-gcc-9.2
+ENV TIZEN_SDK_SYSROOT=$TIZEN_SDK_ROOT/platforms/tizen-$TIZEN_VERSION/tizen/rootstraps/tizen-$TIZEN_VERSION-device.core
 
 ENV FVP_CORSTONE_300_PATH=/opt/FVP_Corstone_SSE-300
 ENV BOUFFALOLAB_SDK_ROOT=/opt/bouffalolab_sdk