Add docker build file

Dockerfile

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+# We use the latest Rust stable release as base image
+FROM rust:1.72.0
+# Let's switch our working directory to `app` (equivalent to `cd app`)
+# The `app` folder will be created for us by Docker in case it does not
+# exist already.
+WORKDIR /app
+# Install the required system dependencies for our linking configuration
+RUN apt update && apt install lld clang -y
+
+# Copy all files from our working environment to our Docker image
+COPY . .
+ENV SQLX_OFFLINE true
+# Let's build our binary!
+# We'll use the release profile to make it faaaast
+RUN cargo build --release
+# When `docker run` is executed, launch the binary!
+ENTRYPOINT ["./target/release/zero2prod"]

sqlx-data.json

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+{
+  "db": "PostgreSQL",
+  "7fd01c52effb1d23f5e242b9a8d05564de3c7a1178c1c2f5f056490e3d704736": {
+    "describe": {
+      "columns": [],
+      "nullable": [],
+      "parameters": {
+        "Left": [
+          "Uuid",
+          "Text",
+          "Text",
+          "Timestamptz"
+        ]
+      }
+    },
+    "query": "\nINSERT INTO subscriptions (id, email, name, subscribed_at)\nVALUES ($1, $2, $3, $4)\n"
+  }
+}