Move `dpkg --add-architecture` before the first apt call

Thanks to @dani-garcia for the review!

docker/Dockerfile.j2

@@ -87,6 +87,18 @@ RUN rustup set profile minimal
 ENV USER "root"
 
 {% endif %}
+{% if "aarch64" in target_file or "armv" in target_file %}
+# Install required build libs for {{ package_arch_name }} architecture.
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture {{ package_arch_name }} \
+    && apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        libssl-dev{{ package_arch_prefix }} \
+        libc6-dev{{ package_arch_prefix }}
+
+{% endif -%}
 {% if "aarch64" in target_file %}
 RUN apt-get update \
     && apt-get install -y \
@@ -143,19 +155,6 @@ RUN apt-get update && apt-get install -y \
 RUN USER=root cargo new --bin app
 WORKDIR /app
 
-{% if "aarch64" in target_file or "armv" in target_file %}
-# Install required build libs for {{ package_arch_name }} architecture.
-RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
-        /etc/apt/sources.list.d/deb-src.list \
-    && dpkg --add-architecture {{ package_arch_name }} \
-    && apt-get update \
-    && apt-get install -y \
-        --no-install-recommends \
-        libssl-dev{{ package_arch_prefix }} \
-        libc6-dev{{ package_arch_prefix }}
-
-{% endif -%}
-
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/aarch64/mysql/Dockerfile

@@ -37,6 +37,16 @@ ARG DB=mysql
 # Don't download rust docs
 RUN rustup set profile minimal
 
+# Install required build libs for arm64 architecture.
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture arm64 \
+    && apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        libssl-dev:arm64 \
+        libc6-dev:arm64
+
 RUN apt-get update \
     && apt-get install -y \
         --no-install-recommends \
@@ -58,16 +68,6 @@ RUN apt-get update && apt-get install -y \
 RUN USER=root cargo new --bin app
 WORKDIR /app
 
-# Install required build libs for arm64 architecture.
-RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
-        /etc/apt/sources.list.d/deb-src.list \
-    && dpkg --add-architecture arm64 \
-    && apt-get update \
-    && apt-get install -y \
-        --no-install-recommends \
-        libssl-dev:arm64 \
-        libc6-dev:arm64
-
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/aarch64/sqlite/Dockerfile

@@ -37,6 +37,16 @@ ARG DB=sqlite
 # Don't download rust docs
 RUN rustup set profile minimal
 
+# Install required build libs for arm64 architecture.
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture arm64 \
+    && apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        libssl-dev:arm64 \
+        libc6-dev:arm64
+
 RUN apt-get update \
     && apt-get install -y \
         --no-install-recommends \
@@ -52,16 +62,6 @@ ENV USER "root"
 RUN USER=root cargo new --bin app
 WORKDIR /app
 
-# Install required build libs for arm64 architecture.
-RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
-        /etc/apt/sources.list.d/deb-src.list \
-    && dpkg --add-architecture arm64 \
-    && apt-get update \
-    && apt-get install -y \
-        --no-install-recommends \
-        libssl-dev:arm64 \
-        libc6-dev:arm64
-
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/armv6/mysql/Dockerfile

@@ -37,6 +37,16 @@ ARG DB=mysql
 # Don't download rust docs
 RUN rustup set profile minimal
 
+# Install required build libs for armel architecture.
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture armel \
+    && apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        libssl-dev:armel \
+        libc6-dev:armel
+
 RUN apt-get update \
     && apt-get install -y \
         --no-install-recommends \
@@ -58,16 +68,6 @@ RUN apt-get update && apt-get install -y \
 RUN USER=root cargo new --bin app
 WORKDIR /app
 
-# Install required build libs for armel architecture.
-RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
-        /etc/apt/sources.list.d/deb-src.list \
-    && dpkg --add-architecture armel \
-    && apt-get update \
-    && apt-get install -y \
-        --no-install-recommends \
-        libssl-dev:armel \
-        libc6-dev:armel
-
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/armv6/sqlite/Dockerfile

@@ -37,6 +37,16 @@ ARG DB=sqlite
 # Don't download rust docs
 RUN rustup set profile minimal
 
+# Install required build libs for armel architecture.
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture armel \
+    && apt-get update \
+    && apt-get install -y \
+        --no-install-recommends \
+        libssl-dev:armel \
+        libc6-dev:armel
+
 RUN apt-get update \
     && apt-get install -y \
         --no-install-recommends \
@@ -52,16 +62,6 @@ ENV USER "root"
 RUN USER=root cargo new --bin app
 WORKDIR /app
 
-# Install required build libs for armel architecture.
-RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
-        /etc/apt/sources.list.d/deb-src.list \
-    && dpkg --add-architecture armel \
-    && apt-get update \
-    && apt-get install -y \
-        --no-install-recommends \
-        libssl-dev:armel \
-        libc6-dev:armel
-
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/armv7/mysql/Dockerfile

@@ -37,16 +37,6 @@ ARG DB=mysql
 # Don't download rust docs
 RUN rustup set profile minimal
 
-# Install MySQL package
-RUN apt-get update && apt-get install -y \
-    --no-install-recommends \
-    libmariadb-dev:armhf \
-    && rm -rf /var/lib/apt/lists/*
-
-# Creates a dummy project used to grab dependencies
-RUN USER=root cargo new --bin app
-WORKDIR /app
-
 # Install required build libs for armhf architecture.
 RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         /etc/apt/sources.list.d/deb-src.list \
@@ -57,6 +47,16 @@ RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         libssl-dev:armhf \
         libc6-dev:armhf
 
+# Install MySQL package
+RUN apt-get update && apt-get install -y \
+    --no-install-recommends \
+    libmariadb-dev:armhf \
+    && rm -rf /var/lib/apt/lists/*
+
+# Creates a dummy project used to grab dependencies
+RUN USER=root cargo new --bin app
+WORKDIR /app
+
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain

docker/armv7/sqlite/Dockerfile

@@ -37,10 +37,6 @@ ARG DB=sqlite
 # Don't download rust docs
 RUN rustup set profile minimal
 
-# Creates a dummy project used to grab dependencies
-RUN USER=root cargo new --bin app
-WORKDIR /app
-
 # Install required build libs for armhf architecture.
 RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         /etc/apt/sources.list.d/deb-src.list \
@@ -51,6 +47,10 @@ RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
         libssl-dev:armhf \
         libc6-dev:armhf
 
+# Creates a dummy project used to grab dependencies
+RUN USER=root cargo new --bin app
+WORKDIR /app
+
 # Copies over *only* your manifests and build files
 COPY ./Cargo.* ./
 COPY ./rust-toolchain ./rust-toolchain