docker: remove redundant target platform

Dockerfile

@@ -173,7 +173,7 @@ COPY ./translations/ /share/translations
 ##################################
 ## Runtime stage, debug variant ##
 ##################################
-FROM --platform=${TARGETPLATFORM} gcr.io/distroless/cc-debian${DEBIAN_VERSION}:debug-nonroot AS debug
+FROM gcr.io/distroless/cc-debian${DEBIAN_VERSION}:debug-nonroot AS debug
 
 ARG TARGETARCH
 COPY --from=builder /usr/local/bin/mas-cli-${TARGETARCH} /usr/local/bin/mas-cli
@@ -185,7 +185,7 @@ ENTRYPOINT ["/usr/local/bin/mas-cli"]
 ###################
 ## Runtime stage ##
 ###################
-FROM --platform=${TARGETPLATFORM} gcr.io/distroless/cc-debian${DEBIAN_VERSION}:nonroot
+FROM gcr.io/distroless/cc-debian${DEBIAN_VERSION}:nonroot
 
 ARG TARGETARCH
 COPY --from=builder /usr/local/bin/mas-cli-${TARGETARCH} /usr/local/bin/mas-cli

tools/syn2mas/Dockerfile

@@ -19,9 +19,9 @@ COPY ./package.json ./package-lock.json ./
 RUN sed -i '/"prepare"/d' package.json
 RUN --network=default \
   npm ci \
-    --target_arch=amd64 \
-    --target_platform=linux \
-    --omit=dev
+  --target_arch=amd64 \
+  --target_platform=linux \
+  --omit=dev
 
 WORKDIR /deps/amd64
 
@@ -30,13 +30,13 @@ COPY ./package.json ./package-lock.json ./
 RUN sed -i '/"prepare"/d' package.json
 RUN --network=default \
   npm ci \
-    --target_arch=x64 \
-    --target_platform=linux \
-    --omit=dev
+  --target_arch=x64 \
+  --target_platform=linux \
+  --omit=dev
 
 
 # Runtime stage
-FROM --platform=${TARGETPLATFORM} gcr.io/distroless/nodejs18-debian12:debug-nonroot
+FROM gcr.io/distroless/nodejs18-debian12:debug-nonroot
 
 WORKDIR /syn2mas
 COPY ./package.json ./package-lock.json ./