Readd missing cargo setup for armv7. Thanks to @dani-garcia!

docker/Dockerfile.j2

@@ -135,6 +135,18 @@ RUN apt-get update \
 ENV CARGO_HOME "/root/.cargo"
 ENV USER "root"
 
+{% elif "armv7" in target_file %}
+RUN apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        gcc-arm-linux-gnueabihf \
+    && mkdir -p ~/.cargo \
+    && echo '[target.armv7-unknown-linux-gnueabihf]' >> ~/.cargo/config \
+    && echo 'linker = "arm-linux-gnueabihf-gcc"' >> ~/.cargo/config
+
+ENV CARGO_HOME "/root/.cargo"
+ENV USER "root"
+
 {% endif %}
 {% if "mysql" in target_file %}
 # Install MySQL package

docker/armv7/mysql/Dockerfile

@@ -47,6 +47,17 @@ RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         libssl-dev:armhf \
         libc6-dev:armhf
 
+RUN apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        gcc-arm-linux-gnueabihf \
+    && mkdir -p ~/.cargo \
+    && echo '[target.armv7-unknown-linux-gnueabihf]' >> ~/.cargo/config \
+    && echo 'linker = "arm-linux-gnueabihf-gcc"' >> ~/.cargo/config
+
+ENV CARGO_HOME "/root/.cargo"
+ENV USER "root"
+
 # Install MySQL package
 RUN apt-get update && apt-get install -y \
     --no-install-recommends \

docker/armv7/sqlite/Dockerfile

@@ -47,6 +47,17 @@ RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         libssl-dev:armhf \
         libc6-dev:armhf
 
+RUN apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        gcc-arm-linux-gnueabihf \
+    && mkdir -p ~/.cargo \
+    && echo '[target.armv7-unknown-linux-gnueabihf]' >> ~/.cargo/config \
+    && echo 'linker = "arm-linux-gnueabihf-gcc"' >> ~/.cargo/config
+
+ENV CARGO_HOME "/root/.cargo"
+ENV USER "root"
+
 # Creates a dummy project used to grab dependencies
 RUN USER=root cargo new --bin /app
 WORKDIR /app